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December 2017
NEW POWER MANAGEMENT PRODUCTS
LTC2992 Dual Wide Range Power Monitor
LT3964 Dual 36V Synchronous 1.6A Buck LED Driver with I2C
LTM4651 EN55022B Compliant 58V, 24W Inverting-Output DC/DC μModule Regulator
LT8362 Low IQ Boost/SEPIC/Inverting Converter with 2A, 60V Switch
LT8650S Dual Channel 4A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2μA Quiescent Current
Contents
Ideal Diodes
LTC®4418 Dual Channel Prioritized PowerPath™ Controller ................................................................................................................................1
LT®8672 Active Rectifier Controller with Reverse Protection ...............................................................................................................................2
Power Monitor
LTC2992 Dual Wide Range Power Monitor ..........................................................................................................................................................4
LED Drivers
LT3964 Dual 36V Synchronous 1.6A Buck LED Driver with I2C ...........................................................................................................................5
µModule® Regulators
LTM®4645 25A DC/DC Step-Down µModule Regulator ........................................................................................................................................6
LTM4651 EN55022B Compliant 58V, 24W Inverting-Output DC/DC µModule Regulator .....................................................................................7
LTM8063 40VIN, 2A Silent Switcher® µModule Regulator ....................................................................................................................................9
LTM8065 40VIN, 2.5A Silent Switcher µModule Regulator .................................................................................................................................10
Switching Regulators—Monolithic
LT8362 Low IQ Boost/SEPIC/Inverting Converter with 2A, 60V Switch ..............................................................................................................11
LT8603 42V, Low IQ, Quad Output Triple Monolithic Buck Converter and Boost Controller ...............................................................................12
LT8650S Dual Channel 4A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2µA Quiescent Current .....................................................14
Switching Regulators—Controllers
LTC3779 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller ......................................................................................................15
LTC3874-1 PolyPhase® Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing ................................................................16
LT8391A 60V 2MHz Synchronous 4-Switch Buck-Boost LED Driver Controller ................................................................................................17
LT8711 Micropower Synchronous Multitopology Controller with 42V Input Capability .....................................................................................18
Design Notes
DN567 60V 2MHz Buck-Boost Controllers Regulate High Power Voltage and Current with High Efficiency and Low EMI
DN569 Cool Running, 144W, 4 × 40A µModule POL Regulator
All registered trademarks and trademarks are the property of their respective owners.
1
FEATURES DESCRIPTION
Ideal Diodes
n Selects Highest Priority Supply from Two Inputs n Blocks Reverse and Cross Conduction Currents n Wide Operating Voltage Range: 2.5V to 40V n –42V Protection Against Reverse Connection n 60V Tolerant V1, V2 Inputs n Adjustable Input Validation Time n Fast Switchover Minimizes Output Voltage Droop n Low 26µA Operating Current n ±1.5% Input Overvoltage/Undervoltage Protection n Adjustable Overvoltage/Undervoltage Hysteresis n Cascadable for Additional Input Supplies n 20-Lead 4mm × 4mm QFN Package
n Industrial Handheld Instruments n High Availability Systems n Battery Backup Systems n Servers and Computer Peripherals
APPLICATIONS
LTC4418 Dual Channel Prioritized PowerPath Controller
The LTC4418 connects one of two valid power supplies to a common output based on priority and validity. Priority is defined by pin assignment, with V1 assigned the higher priority and V2 the lower priority. A power supply is defined as valid when its voltage has been within its overvoltage (OV) and undervoltage (UV) window continuously for at least the configured validation time. If the highest priority valid input falls out of the OV/UV window, the channel is immediately disconnected and the other valid input is connected to the common output. Multiple LTC4418s, as well as triple channel LTC4417s, can be cascaded to provide switchover between more than two inputs.
The LTC4418 incorporates fast non-overlap switching circuitry to prevent both reverse and cross conduction while minimizing output droop. The gate driver includes a 6V clamp to protect external MOSFETs. A controlled soft-start feature minimizes start-up inrush current. Open drain VALID outputs indicate the input supplies have been within their OV/UV window for the duration of the validation time. The validation time can be disabled or adjusted using an external capacitor.
V2
UV2
OV2
LTC4418
4418 TA01a
VS1 G1 VS2 G2
1M
100nF
60.4k
226k
1M
33.2k
78.7k
470nF BAT46WJ
M3 M4
47nF
698Ω
100k
82µF
1.25AMAX OUTPUT
V1
UV1
OV1
CAS
INTVCC
EN
SHDN
+FDS4465
M1 M2FDS44655V SYS
12V WALLADAPTER
GND HYS
255k
TMR
1nF 100nF
100k
VALID1
VALID2
VOUT
Priority Switching from V1 to V2
VOUT
5V
13.8V
2ms/DIV
ILOAD = 1.25ACOUT = 82µF
V12V/DIV
V22V/DIV
4418 TA01b
UF PACKAGE 20-LEAD (4mm × 4mm) PLASTIC QFN
LTC4418CUF LTC4418IUF
20 19 18 17 16
6 7 8
TOP VIEW
GND21
UF PACKAGE20-LEAD (4mm × 4mm) PLASTIC QFN
9 10
5
4
3
2
1
11
12
13
14
15TMR
UV1
OV1
UV2
OV2
VOUT
VS1
G1
VS2
G2
HYS
SHDN
EN V1 V2
VALID1
VALID2
GND
CAS
INTV
CC
2
FEATURES DESCRIPTION n Reverse Input Protection to –40V n Improved Performance Compared to a Schottky Diode: n Reduce Power Dissipation by >90% n Reduce Drop to 20mV
n Ultrafast Transient Response n Rectifies 6VP-P Up to 50kHz n Rectifies 2VP-P Up to 100kHz
n Wide Operating Voltage Range: 3V to 42V n Low 20µA Quiescent Current in Operation n Low 3.5µA Shutdown Current n Accurate 1.21V Enable Pin Threshold n Available in Small 10-Lead MSOP
n Automotive Battery Protection n Industrial Supplies n Portable Instrumentation
The LT8672 is an active rectifier controller for reverse input protection. It drives an external N-channel MOSFET to replace a power Schottky diode. Its very low quiescent current and fast transient response meet the tough requirements in automotive applications where AC input signals of up to 100kHz are present. These signals are rectified with minimum power dissipation on the external FET, simplifying thermal management on the PCB.
With a drop of only 20mV, the LT8672 solution eases the minimum input voltage requirement during cold crank and start-stop, allowing simpler and more efficient circuits. If the input power source fails or is shorted, a fast turn-off minimizes reverse current transients. An available shutdown mode reduces the quiescent current to 3.5μA.
An integrated auxiliary boost regulator provides the required boost voltage to turn the external FET fully on. A power good pin signals when the external FET is ready to take load current.
APPLICATIONS
LT8672 Active Rectifier Controller with Reverse Protection
Ideal Diodes
12V, 5A Automotive Reverse Battery Protection
IPD100N06S4-03
1μF 100μHSMBJ33A33V
SMBJ15A15V
8672 TA01a
VOUT5A
VBATT12V
4.7µF+
470µF
TO SYSTEM LOADS
OFFON
SOURCE GATE DRAIN AUXSWAUX
PG
GND
EN/UVLO
LT8672
Rectification of Input Ripple
VOUT2V/DIV
500µs/DIV
VBATT2V/DIV
8672 TA01b
MS PACKAGE 10-LEAD PLASTIC MSOP
LT8672EMS LT8672IMSLT8672HMS
12345
EN/UVLOGND
PGGND
NC
109876
GATESOURCEDRAINAUXAUXSW
TOP VIEW
MS PACKAGE10-LEAD PLASTIC MSOP
The LTC®2944 measures battery current, charge, voltage and internal temperature via an I2C interface. A precision coulomb counter integrates current to determine charge. Features include programmable limit thresholds and alerts. The LTC2944 provides useful measurements for any battery chemistry and capacity.
Measure Charge, Voltage, Current and Temperature with 1% Accuracy
, LT, LTC, LTM, Linear Technology, the Linear logo, and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
Features
• Measures Accumulated Battery Charge
• 3.6V to 60V Operating Range for Multicell Applications
• 14-Bit ADC Measures Voltage, Current and Temperature
• 1% Charge, Voltage, Current Accuracy
• I2C/SMBus Interface
• Configurable Alert Output/Charge Complete Input
• Quiescent Current <150µA
• 8-Pin 3mm x 3mm DFN Package
www.linear.com/product/LTC2944
1-800-4-LINEAR
Battery Monitors
Part Number
LTC2941LTC2941-1LTC2942LTC2942-1LTC2943LTC2943-1LTC2944LTC4150
PackageMeasures:
Q V I T2.7V to 5.5V2.7V to 5.5V2.7V to 5.5V2.7V to 5.5V3.6V to 20V3.6V to 20V3.6V to 60V2.7V to 8.5V
2mm x 3mm DFN-62mm x 3mm DFN-62mm x 3mm DFN-62mm x 3mm DFN-63mm x 3mm DFN-83mm x 3mm DFN-83mm x 3mm DFN-8
MSOP-10
1A
1A
1A
••••••••
•••••
•••
•••••
OperatingRange
Internal SenseResistor
High Voltage Battery Monitor
LTC2944
3.6V to60V
CHARGE
CURRENT
VOLTAGE
TEMP
1 9 5 4 Ah
Find your local sales office: www.linear.com/contact
The LTC®2944 measures battery current, charge, voltage and internal temperature via an I2C interface. A precision coulomb counter integrates current to determine charge. Features include programmable limit thresholds and alerts. The LTC2944 provides useful measurements for any battery chemistry and capacity.
Measure Charge, Voltage, Current and Temperature with 1% Accuracy
, LT, LTC, LTM, Linear Technology, the Linear logo, and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
Features
• Measures Accumulated Battery Charge
• 3.6V to 60V Operating Range for Multicell Applications
• 14-Bit ADC Measures Voltage, Current and Temperature
• 1% Charge, Voltage, Current Accuracy
• I2C/SMBus Interface
• Configurable Alert Output/Charge Complete Input
• Quiescent Current <150µA
• 8-Pin 3mm x 3mm DFN Package
www.linear.com/product/LTC2944
1-800-4-LINEAR
Battery Monitors
Part Number
LTC2941LTC2941-1LTC2942LTC2942-1LTC2943LTC2943-1LTC2944LTC4150
PackageMeasures:
Q V I T2.7V to 5.5V2.7V to 5.5V2.7V to 5.5V2.7V to 5.5V3.6V to 20V3.6V to 20V3.6V to 60V2.7V to 8.5V
2mm x 3mm DFN-62mm x 3mm DFN-62mm x 3mm DFN-62mm x 3mm DFN-63mm x 3mm DFN-83mm x 3mm DFN-83mm x 3mm DFN-8
MSOP-10
1A
1A
1A
••••••••
•••••
•••
•••••
OperatingRange
Internal SenseResistor
High Voltage Battery Monitor
LTC2944
3.6V to60V
CHARGE
CURRENT
VOLTAGE
TEMP
1 9 5 4 Ah
Find your local sales office: www.linear.com/contact
4
FEATURES DESCRIPTION n Rail-to-Rail Input Range: 0V to 100V n Wide Input Supply Range: 2.7V to 100V n Measures Current, Voltage and Power n Shunt Regulator for Supplies >100V n 8-/12-Bit ADCs with Less Than ±0.3% Total Unadjusted Error n Four General Purpose Inputs/Outputs Configurable as ADC Inputs
n Continuous Scan and Snapshot Modes n Stores Minimum and Maximum Measurements n Alerts When Alarm Thresholds Exceeded n Shutdown Mode with IQ < 50μA n Split SDA Pin Eases Opto-Isolation n Available in 16-Lead 4mm × 3mm DFN and MSOP Packages
n Telecom Infrastructure n Industrial Equipment n Automotive n Computer Systems and Servers
The LTC2992 is a rail-to-rail system monitor that measures current, voltage and power of two supplies. It features an operating range of 2.7V to 100V and includes a shunt regulator for supplies above 100V. The voltage measurement range of 0V to 100V is independent of the input supply. Two ADCs simultaneously measure each supply’s current. A third ADC monitors the input voltages and four auxiliary external voltages. Each supply’s current and power is added for total system consumption. Minimum and maximum values are stored and an overrange alert with programmable thresholds minimizes the need for software polling. Data is reported via a standard I2C interface. Shutdown mode reduces current consumption to 25μA typically.
The LTC2992 I2C interface includes separate data input and output pins for use with standard or opto-isolated I2C connections. The LTC2992-1 has an inverted data output for use with inverting opto-isolator configurations.
APPLICATIONS
LTC2992 Dual Wide Range Power Monitor
MS PACKAGE 16-LEAD PLASTIC MSOP
LTC2992CMS LTC2992IMSTC2992HMS
MS PACKAGE 16-LEAD PLASTIC MSOP
LTC2992CMS-1 LTC2992IMS-1TC2992HMS-1
DE PACKAGE 16-LEAD (4mm × 3mm) PLASTIC DFN
LTC2992CDE LTC2992IDETC2992HDE
DE PACKAGE 16-LEAD (4mm × 3mm) PLASTIC DFN
LTC2992CDE-1 LTC2992IDE-1TC2992HDE-1
Power Monitor
ADC Error (GPIO)
12-BIT MODE
TYPICAL
CODE0 1024 2048 3072 4096
–0.50
–0.25
0
0.25
0.50AD
C ER
ROR
(%)
2992 TA01b
MAX ERROR
161514131211109
17
12345678
SENSE2–
SENSE2+
GPIO2GPIO4GNDSDAOSDAISCL
SENSE1–
SENSE1+
GPIO1GPIO3ADR1ADR0
INTVCCVDD
TOP VIEW
DE PACKAGE16-LEAD (4mm × 3mm) PLASTIC DFN
161514131211109
17
12345678
SENSE2–
SENSE2+
GPIO2GPIO4GNDSDAOSDAISCL
SENSE1–
SENSE1+
GPIO1GPIO3ADR1ADR0
INTVCCVDD
TOP VIEW
DE PACKAGE16-LEAD (4mm × 3mm) PLASTIC DFN
12345678
SENSE1–
SENSE1+
GPIO1GPIO3ADR1ADR0
INTVCCVDD
161514131211109
SENSE2–
SENSE2+
GPIO2GPIO4GNDSDAOSDAISCL
TOP VIEW
MS PACKAGE16-LEAD PLASTIC MSOP
12345678
SENSE1–
SENSE1+
GPIO1GPIO3ADR1ADR0
INTVCCVDD
161514131211109
SENSE2–
SENSE2+
GPIO2GPIO4GNDSDAOSDAISCL
TOP VIEW
MS PACKAGE16-LEAD PLASTIC MSOP
Dual Wide Range Power Monitor
VDD
LTC2992SDAI
SDAO
SCLGPIO4
GPIO1
GPIO2
VIN13V TO 100V
I2CINTERFACE
VIN20V TO 100V
0.01Ω
ALERT
2992 TA01a
SENSE2+ SENSE2–SENSE1+ SENSE1–
0.01Ω
0.1μF
ADR0 ADR1GNDINTVCC
GPIO3 DATAREADY
MEASUREDVOLTAGE 2
MEASUREDVOLTAGE 1
VOUT1
VOUT2
5
FEATURES DESCRIPTION n Wide Input Voltage Range: 4V to 36V n Two Independent 1.6A/40V Synchronous Bucks n I2C Interface for Internal True Color PWM™ Dimming (8192:1), Analog Dimming and Fault Reporting
n 1000:1 External True Color PWM Dimming and 10:1 External Analog Dimming
n PMOS Switch Driver for PWM and Output Disconnect n ±3% Constant Current Regulation n Adjustable Frequency: 200kHz to 2MHz n Frequency Synchronization with Clock Output n Programmable OPENLED Protection with Reporting n Short-Circuit Protection with Reporting n Programmable Undervoltage Lockout with Hysteresis n Internal Compensation n Nine Unique Device Addresses for I2C n Available in 5mm × 6mm 36-Lead QFN Package
n General Purpose, Industrial, Medical and Automotive Lighting
n Constant-Current, Constant-Voltage Source
The LT3964 is a dual synchronous step-down DC/DC converter with I2C interface designed to operate as a constant-current and constant-voltage source and is ideal for driving LEDs. The fixed frequency and peak current mode topology result in stable operation over a wide range of supply and output voltages. The ground referred voltage FB pin serves as the input for several LED protection features, and also allows the converter to operate as a constant-voltage source. The maximum output current is set by an external resistor, and the output current amplifier has a rail-to-rail common mode range. LT3964 uses an I2C interface to communicate with a microcontroller to read LED faults, write PWM and analog dimming registers and set fault masking. The I2C PWM input provides LED dimming ratios up to 8192:1. The I2C programmable CTRL register sets the gain of the external CTRL pin, and maximum current sense threshold, providing additional analog dimming capability.
APPLICATIONS
LT3964 Dual 36V Synchronous 1.6A Buck LED Driver with I2C
UHE PACKAGE 36-LEAD (5mm × 6mm) PLASTIC QFN
LT3964EUHE LT3964IUHELT3964HUHE
Protected by U.S. Patents, including 7199560, 7321203, 7746300.
50W Dual Buck 1A LED Driver
Efficiency, VIN = 34V
LED Driver
ILED (mA)100 200 300 400 500 600 700 800 900 1000
70
75
80
85
90
95
100
EFFI
CIEN
CY (%
)
IN
3964 TA01b
BOTH CHANNELS ARE ON
11 12 13 14
TOP VIEW
37PGND
UHE PACKAGE36-LEAD (5mm × 6mm) PLASTIC QFN
15 16 17 18
36 35 34 33 32 31 30 29
21
22
23
24
25
26
27
28
8
7
6
5
4
3
2
1RT
CTRL1
CTRL2
EN/UVLO
INTVCC
ALERT
PWM1
PWM2
SDA
SCL
ISP1
ISN1
PWMTG1
SGND
FB1
FB2
SGND
PWMTG2
ISN2
ISP2
SYNC
/CLK
OUT
T SET
V IN1
V IN1
NC SW1
SW1
BST1
ADDR
2
ADDR
1
V IN2
V IN2 NC
SW2
SW2
BST2
20
19
9
10 10µH
0.22µF
1M
100mΩ
2.2µF
43.2k
2.2µF
100k
3.92k
499k
165k
100k2.2µF
27.4k
2.2µF
BST1
LT3964
SW1
VIN1
ISP1ISN1
PWMTG1
CTRL1
BST2
SW2
ISP2ISN2
PWMTG2
GND
EN/UVLO
CTRL2
PWM1PWM2
PWM1PWM2
INTVCC
ALERT
VIN2
GND
TSETRT
SCLSDA
2-WIREI2C INTERFACE
ADDR1 ADDR2
SYNC/CLKOUT2MHz
INTVCC
INTVCC
INTVCC
FB1
FB2
10µH
0.22µF
1M
100mΩ
2.2µF
43.2k
1A, 8 LEDsUP TO26V
1A, 8 LEDsUP TO26V
10µF×2
31V TO 36V(ENABLED AT 33V,
SHUTDOWN AT 31V)
3964 TA01a
6
FEATURES DESCRIPTION n 4.7V to 15V Input Voltage Range n 0.6V to 1.8V Output Voltage Range n 25A DC Output Current n ±1.2% Total DC Output Voltage Error (–40°C to 125°C) n High Reliability N + 1 Phase Redundancy Supported n Internal or External Control Loop Compensation n Differential Remote Sense Amplifier for Precision Regulation n Current Mode Control/Fast Transient Response n Multiphase Current Sharing Up to 150A n Built-In Temperature Monitoring n Selectable Pulse-Skipping, Burst Mode® Operation n Soft-Start/Voltage Tracking n Frequency Synchronization n Output Overvoltage Protection n Output Overcurrent Foldback Protection n 9mm × 15mm × 3.51mm BGA Package
n Telecom, Networking and Industrial Equipment n Point-of-Load Regulation
The LTM4645 is a 25A output switching mode step-down DC/DC µModule (power module) regulator. Included in the package are the switching controller, power FETs, inductor and all supporting components. Operating over an input voltage range of 4.7V to 15V, the LTM4645 supports an output voltage range of 0.6V to 1.8V, set by a single external resistor. Only a few input and output capacitors are needed.
Its high efficiency design delivers about 86% efficiency from 12V input to 1.0V output with 25A continuous load current. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization, programmable multiphase operation, N+1 phase redundancy, and output voltage tracking for supply rail sequencing.
Fault protection features include overvoltage and overcurrent protection. The power module is offered in a space saving 9mm × 15mm × 3.51mm BGA package. The LTM4645 is available with SnPb (BGA) or RoHS compliant terminal finish.
APPLICATIONS
LTM4645 25A DC/DC Step-Down µModule Regulator
µModule Regulators
BGA PACKAGE 77-LEAD (9mm × 15mm × 3.51mm)
LTM4645EY LTM4645IY
Efficiency vs Output Current at 1V Output
12VIN, 1VOUT, 25A DC/DC µModule Regulator
BGA PACKAGE77-LEAD (9mm × 15mm × 3.51mm)
1
VIN
DRVCC
VOUT
GND
GND
GND
L
K
J
H
G
F
E
D
C
B
A
2 3 4GND
PWM CLKOUTTEST1
MODE/PLLIN
PHASMDINTVCC
FREQ
SGND
TEST3
PGOOD
COMPb
GND GND
SVIN
HIZB
GND
RUN5 6 7
TOP VIEW
VFB
VOSNS+
COMPa
TEST2
VOSNS–
TEMP–
TEMP+TRACK/SSSW
LOAD CURRENT (A)0
EFFI
CIEN
CY (%
)
80
4645 TA01b
70
10 205 15 25
90
100
75
60
65
85
95
5V INPUT12V INPUT
HIZB
VIN
SVIN
FREQ
COMPaCOMPbTRACK/SS
PINS NOT USED IN THIS CIRCUIT: CLKOUT, MODE/PLLIN, PGOOD, PHASMD, PWM, RUN, SW, TEMP+, TEMP–
VOUT
VOSNS+
VFB
VOSNS–
22µF25V×2
2.2Ω
4.7µF6.3V
1µF
0.1µF
VIN6V TO 15V
43.2k
DRVCC INTVCC
LTM4645
SGND GND
90.9k
4645 TA01a
100µF6.3V×4
47pF
VOUT1V25A
7
FEATURES DESCRIPTION
µModule Regulators
n Complete Low EMI Switch Mode Power Supply n EN55022 Class B Compliant n Wide Input Voltage Range: 3.6V to 58V n Up to 4A Output Current
n 24W Output from 12VIN to –24VOUT, PLOSS = 5W, TA = 60°C, tRISE = 60°C, 200LFM
n Output Voltage Range: –26.5V ≤ VOUT– ≤ –0.5V
n Safe Operating Area: VIN + |VOUT–| ≤ 58V
n ±1.67% Total DC Output Voltage Error Over Line, Load and Temperature (–40°C to 125°C)
n Parallel and Current Share with Multiple LTM4651s n Constant-Frequency Current Mode Control n Frequency Synchronization Range: 250kHz to 3MHz n Power Good Indicator and Programmable Soft-Start n Overcurrent/Overvoltage/Overtemperature Protection n 15mm × 9mm × 5.01mm BGA Package
n Avionics, Industrial Control and Test Equipment n Video, Imaging and Instrumentation n 48V Telecom and Network Power Supplies n RF Systems
The LTM4651 is an ultralow noise, 58V, 24W DC/DC μModule inverting topology regulator. It regulates a negative output voltage (VOUT
–) from a positive input supply voltage (VIN), and is designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power MOSFETs, inductor, filters and support components.
The LTM4651 can regulate VOUT– to a value between –0.5V and
–26.5V, provided that its input and output voltages adhere to the safe operating area criteria of the LTM4651: VIN + |VOUT
–| ≤ 58V. A switching frequency range of 250kHz to 3MHz is supported (400kHz default) and the module can synchronize to an external clock.
Despite being an inverting topology regulator, no level shift circuitry is needed to interface to the LTM4651’s RUN, PGOOD or CLKIN pins; those pins are referenced to GND.
The LTM4651 is offered in a 15mm × 9mm × 5.01mm BGA package with SnPb or RoHS compliant terminal finish.
APPLICATIONS
LTM4651 EN55022B Compliant 58V, 24W Inverting-Output DC/DC µModule Regulator
–24V, 2.25A* Ultralow Noise DC/DC µModule Register
Output Current Capability*
BGA PACKAGE 77-PIN (15mm × 9mm × 5.01mm)
LTM4651EY LTM4651IY
1
A
B
C
D
E
F
G
H
J
K
L
2 3 4TOP VIEW
BGA PACKAGE77-PIN (15mm × 9mm × 5.01mm)
5 6 7
VIN
VD
PGND
TEMP–
NC
NC
VOUT–
NC
SW
GND
SVIN
VINREG
SVOUT–fSET
RUN
PGOOD PGDFB
CLKIN
VOUT–
VOUT–
SVOUT–GNDSNS
EXTVCC
INTVCC
COMPb COMPa
ISETb ISETa
TEMP+TEMP–TEMP+
NC
Protected by U.S. Patents, including 5481178, 5705919, 5847554, 6580258.
PINS NOT USED IN THIS CIRCUIT: CLKIN, PGOOD, PGDFB, SW, EXTVCC TEMP+, TEMP–, NC
ISETaGND ISETb
VIN
SVIN
VD
RUN
INTVCC
VINREG
COMPa
COMPb
fSET
PGND
GNDSNS
SVOUT–
VOUT–
LTM4651–24VOUT, UP TO 2.25A
10µF×2
LOAD
90.9k481k
4.7μF
4.7μF
VIN3.6V
TO 34V
4651 TA01a
INPUT VOLTAGE (V)0 10 20 30 40 50 60
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
OUTP
UT C
URRE
NT (A
)
4651 TA01b
*Current limit frequency-foldback activates at load currents higher than indicated curves. Continuous output current capability subject to details of application implementa-tion.
VOUT– = –0.5V
VOUT– = –3.3V
VOUT– = –5V
VOUT– = –8V
VOUT– = –12V
VOUT– = –15V
VOUT– = –20V
VOUT– = –24V
, LT, LTC, LTM, Linear Technology, the Linear logo, and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
Product Family Key Features & Part Numbers
Ultrathin Buck Regulators 1.8mm Height: LTM®4622, LTM4623
Buck-Boost Regulators LTM4607, LTM8055, LTM8056
Multiple Output Buck Regulators Dual: LTM4616, 4620, 4628, 4630 Triple: LTM4615 Quad: LTM4644 Quint: LTM8001, LTM8008
High Power Buck Regulators Up to 144A: Four in Parallel LTM4630
High Voltage Buck Regulators Up to 60V: LTM8027, LTM8050
Digital Interface Buck Regulators Dual Output: LTM4675, LTM4676, LTM4676A
Isolated Converters Up to 1500VDC: LTM8048, LTM8057, LTM8058
Ultralow Noise EN55022 Class B: LTM4606, LTM8033
LED Drivers Up to 36V LED String: LTM8040, LTM8042, LTM8042A
Battery Chargers Li-Ion, Li-Polymer, SLA, LiFePO4: LTM8061, LTM8062, LTM8062A
µModule Product Family Examples For More Information
www.linear.com/uModulepower
1-800-4-LINEAR
Our quickest, simplest and most integrated DC/DC power solutions are complete systems-in-a-package with integrated inductor, MOSFET, DC/DC regulator IC and supporting components. With over 100 power solutions available, each µModule product is qualified with Linear Technology’s stringent electrical, package and thermal reliability tests. Simplify and speed your power system development with µModule power products. Our µModule products are available in both BGA and LGA packages.
Simple & Done
Over 100 µModule® Power Solutions
Complete Power System-in-a-Package
Find your local sales office: www.linear.com/contact
9
FEATURES DESCRIPTION
µModule Regulators
n Low Noise Silent Switcher Architecture n Wide Input Voltage Range: 3.2V to 40V n Wide Output Voltage Range: 0.8V to 15V n 2A Continuous Output Current at 12VIN, 5VOUT, TA = 85°C n 2.5A Peak Current n Selectable Switching Frequency: 200kHz to 2.2MHz n External Synchronization n Configurable as an Inverter n 6.25mm × 4mm × 2.22mm BGA Package
n Automotive Battery Regulation n Power for Portable Products n Distributed Supply Regulation n Industrial Supplies n Wall Transformer Regulation
The LTM8063 is a 40VIN, 2A continuous, 2.5A peak, step-down µModule (power module) regulator. Included in the package are the switching controller, power switches, inductor and all support components. Operating over an input voltage range of 3.2V to 40V, the LTM8063 supports an output voltage range of 0.8V to 15V and a switching frequency range of 200kHz to 2.2MHz, each set by a single resistor. Only the input and output filter capacitors are needed to finish the design.
The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The LTM8063 is packaged in a thermally enhanced, compact overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8063 is RoHS compliant.
APPLICATIONS
LTM8063 40VIN 2A Silent Switcher µModule Regulator
5VOUT from 6.5VIN to 40VIN Step-Down Converter
Efficiency vs Load Current
BGA PACKAGE 28-LEAD (6.25mm × 4mm × 2.22mm)
LTM8063EY LTM8063IY
1µF
22µF45.3k27.4k
1.4MHz
LTM8063
VOUTVOUT5V2A2.5A PEAK
VINVIN6.5V TO 40V
FBGND
RUN
SYNC
RT
8063 TA01a
PINS NOT USED IN THIS CIRCUIT: TR/SS, PG
12VIN24VIN36VIN
LOAD CURRENT (A)0 0.5 1 1.5 2 2.5
55
65
75
85
95
EFFI
CIEN
CY (%
)
8063 TA01b
GND
BANK 1
GND
BANK 3 VOUT
BANK 2VIN
F
G
E
A
B
C
D
21 43
BGA PACKAGE28-LEAD (6.25mm × 4mm × 2.22mm) BGA PACKAGE
FBPG SYNC
FB TR/SS
RT
TOP VIEW
GND
RUN
, LT, LTC, LTM, Linear Technology, the Linear logo, and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
Product Family Key Features & Part Numbers
Ultrathin Buck Regulators 1.8mm Height: LTM®4622, LTM4623
Buck-Boost Regulators LTM4607, LTM8055, LTM8056
Multiple Output Buck Regulators Dual: LTM4616, 4620, 4628, 4630 Triple: LTM4615 Quad: LTM4644 Quint: LTM8001, LTM8008
High Power Buck Regulators Up to 144A: Four in Parallel LTM4630
High Voltage Buck Regulators Up to 60V: LTM8027, LTM8050
Digital Interface Buck Regulators Dual Output: LTM4675, LTM4676, LTM4676A
Isolated Converters Up to 1500VDC: LTM8048, LTM8057, LTM8058
Ultralow Noise EN55022 Class B: LTM4606, LTM8033
LED Drivers Up to 36V LED String: LTM8040, LTM8042, LTM8042A
Battery Chargers Li-Ion, Li-Polymer, SLA, LiFePO4: LTM8061, LTM8062, LTM8062A
µModule Product Family Examples For More Information
www.linear.com/uModulepower
1-800-4-LINEAR
Our quickest, simplest and most integrated DC/DC power solutions are complete systems-in-a-package with integrated inductor, MOSFET, DC/DC regulator IC and supporting components. With over 100 power solutions available, each µModule product is qualified with Linear Technology’s stringent electrical, package and thermal reliability tests. Simplify and speed your power system development with µModule power products. Our µModule products are available in both BGA and LGA packages.
Simple & Done
Over 100 µModule® Power Solutions
Complete Power System-in-a-Package
Find your local sales office: www.linear.com/contact
10
FEATURES DESCRIPTION
µModule Regulators
n Complete Step-Down Switch Mode Power Supply n Low Noise Silent Switcher Architecture n Wide Input Voltage Range: 3.4V to 40V n Wide Output Voltage Range: 0.97V to 18V n 2.5A Continuous Output Current, 3.5A Peak n Selectable Switching Frequency: 200kHz to 3MHz n External Synchronization n Programmable Soft-Start n Tiny, Low Profile 6.25mm × 6.25mm × 2.32mm RoHS Compliant BGA Package
n Automotive Battery Regulation n Power for Portable Products n Distributed Supply Regulation n Industrial Supplies n Wall Transformer Regulation
The LTM8065 is a 40VIN, 3.5A peak, 2.5A continuous step-down µModule (power module) regulator. Included in the package are the switching controller, power switches, inductor and all support components. Operating over an input voltage range of 3.4V to 40V, the LTM8065 supports an output voltage range of 0.97V to 18V and a switching frequency range of 200kHz to 3MHz, each set by a single resistor. Only the input and output filter capacitors are needed to finish the design.
The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The LTM8065 is packaged in a thermally enhanced, compact overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8065 is RoHS compliant.
APPLICATIONS
LTM8065 40VIN, 2.5A Silent Switcher µModule Regulator
BGA PACKAGE 36-LEAD (6.25mm × 6.25mm × 2.32mm)
LTM8065EY LTM8065IY 2.2µF
22µF60.4k41.2k
1MHz
LTM8065
VOUTVOUT5V2.5A3.5A PEAK
VINVIN7V TO 40V
FBGND
RUN
SYNC
RT
8065 TA01a
PINS NOT USED IN THIS CIRCUIT: TR/SS, PG
AUXBIAS
LOAD CURRENT (A)
VIN = 12V
0 1 2 380
85
90
95EF
FICI
ENCY
(%)
8065 TA01b
GND
BANK 1 GND
BANK 3 VOUT
BANK 2VIN
F
E
A
B
C
D
21 43 5 6
BGA PACKAGE36-LEAD (6.25mm × 6.25mm × 2.32mm) BGA PACKAGE
BIAS
FB
PG
SYNCAUX TR/SS
RT
TOP VIEW
GND GND
RUN
Efficiency vs Load Current
5VOUT from 7VIN to 40VIN Step-Down Converter
11
FEATURES DESCRIPTION
Switching Regulators—Monolithic
n Wide Input Voltage Range: 2.8V to 60V n Ultralow Quiescent Current and Low Ripple Burst Mode Operation: IQ = 9µA
n 2A, 60V Power Switch n Positive or Negative Output Voltage Programming with a Single Feedback Pin
n Programmable Frequency (300kHz to 2MHz) n Synchronizable to an External Clock n Spread Spectrum Frequency Modulation for Low EMI n BIAS Pin for Higher Efficiency n Programmable Undervoltage Lockout (UVLO) n Thermally Enhanced 10-Lead 3mm × 3mm DFN and 16-Lead MSOP Packages
n Industrial and Automotive n Telecom n Medical Diagnostic Equipment n Portable Electronics
The LT8362 is a current mode DC/DC converter with a 60V, 2A switch operating from a 2.8V to 60V input. With a unique single feedback pin architecture it is capable of boost, SEPIC or inverting configurations. Burst Mode operation consumes as low as 9µA quiescent current to maintain high efficiency at very low output currents, while keeping typical output ripple below 15mV.
An external compensation pin allows optimization of loop bandwidth over a wide range of input and output voltages and programmable switching frequencies between 300kHz and 2MHz. A SYNC/MODE pin allows synchronization to an external clock. It can also be used to select between burst or pulse-skipping modes of operation with or without Spread Spectrum Frequency Modulation for low EMI. For increased efficiency, a BIAS pin can accept a second input to supply the INTVCC regulator. Additional features include frequency foldback and programmable soft-start to control inductor current during start-up.
The LT8362 is available in a thermally enhanced 10-lead 3mm × 3mm DFN package or a thermally enhanced 16-lead MSOP package with four pins removed.
APPLICATIONS
LT8362 Low IQ Boost/SEPIC/ Inverting Converter with 2A, 60V Switch
DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN
LT8362EDD LT8362IDD LT8362HDD
MSE PACKAGE VARIATION: MSE16(12)
16-LEAD PLASTIC MSOPLT8362EMSE LT8362IMSE LT8362HMSE
TOP VIEW
DD PACKAGE10-LEAD (3mm × 3mm) PLASTIC DFN
10
9
6
7
8
4
5
3
2
1 SW
SYNC/MODE
SS
RT
FBX
EN/UVLO
VIN
INTVCC
BIAS
VC
11PGND,GND
8362 TA01a
34.8k
57.6k
150pF
20k
1µF
VIN SW
EN/UVLOLT8362
VIN8V TO 38V
VOUT48V200mA AT VIN = 8V320mA AT VIN = 12V700mA AT VIN = 24V
6.8μH
1M
SYNC/MODE
FBX
BIAS
SS GND VC
4.7µF
4.7µF
RT
INTVCC
10nF
4.7pF
EFFICIENCY
POWER LOSS
VIN = 12VVIN = 24V
LOAD CURRENT (A)0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
0
10
20
30
40
50
60
70
80
90
100
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
EFFI
CIEN
CY (%
)
POWER LOSS (W
)
8362 TA01b
1 3 5678
EN/UVLO
VIN
INTVCCNC
BIASVC
16 14 1211109
SW1
SW2 SYNC/MODESSRTFBX
TOP VIEW
17PGND,
GND
MSE PACKAGEVARIATION: MSE16 (12)16-LEAD PLASTIC MSOP
2MHz, 48V Output Boost Converter
Efficiency and Power Loss
12
FEATURES DESCRIPTION
Find your local sales office: www.linear.com/contact
LTC7150S
VIN 3.1V to 20V
VOUT ≥0.6V @ 20A
Info & Free Samples
, LT, LTC, LTM, Linear Technology, the Linear logo, and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
www.linear.com/product/LTC7150S1-800-4-LINEAR
Selected Monolithic Single & Dual Buck Regulators
Need a high performance, high power point-of-load power supply for your digital IC (FPGA, uP, uC, DSP, GPU, PLD, ASIC)? The LTC7150S is a 20A, high efficiency monolithic synchronous buck regulator that incorporates Silent Switcher 2 technology, delivering excellent EMI performance while easing board layout. Its phase-lockable controlled on-time current mode architecture enables large step-down ratios at high switching frequencies to deliver high power density solutions. PolyPhase operation allows multiple LTC7150S regulators to run in parallel out-of-phase, reducing the amount of required input and output capacitance. Its operating supply voltage range is 3.1V to 20V, with an output voltage range of 0.6V to VIN. With an operating frequency programmable from 400kHz to 3MHz, it can use physically smaller inductor and capacitor sizes, and can be externally synchro-nized over the same range for noise sensitive applications.
12VIN to 1.2VOUT, 92% Efficient Monolithic Buck
20VIN & 20AOUT
Silent Switcher®2
LTC7150S
LTC7151S*
LT8642S*
LT8652S*
LTC3636
LTC7124
3.1V to 20V3.1V to 20V3V to 18V3V to 18V
3.1V to 20V3.1V to 17V
20A15A10A
8.5A/8.5A6A/6A
3.5A/3.5A
3MHz3MHz3MHz3MHz4MHz4MHz
YesYesNoYesNoNo
5 x 6 x 1.3mm BGA
4 x 5 x 0.75mm LQFN
4 x 4 x 0.94mm LQFN
4 x 7 x 0.94mm LQFN
4 x 5 x 0.75mm QFN
3 x 5 x 0.75mm QFN
Part Number Freq (Max) DifferentialRemote Sense
SS 2 ^^ SS 2 ^^SS 2 ^^SS 2 ^^
NoNo
SilentSwitcher PackageVIN RangeIOUT
0.6V to VIN
0.5V to VIN
0.6V to VIN
0.6V to VIN
0.6V to 12V0.6V to VIN
VOUT Range
* Future product, please contact for more information. ^^ SS 2 = noise-cancelling hot loops and integrated capacitors
12
10
8
6
4
2
0
100
95
90
85
80
75
700 4 8 12 16 20
POWER LOSS (W
)EFFI
CIEN
CY (%
)
IOUT (A)
Efficiency and Power Loss
n Flexible Power Supply System Capable of Four Regulated Outputs with VBATT << VOUT
n Two High Voltage Synchronous Buck Regulators n 3V to 42V Input Voltage Range n Output Currents Up to 2.5A and 1.5A
n One Low Voltage Synchronous Buck Regulator n 2.6V to 5.5V Input Voltage Range n Output Currents Up to 1.8A
n One Boost Controller Allows Buck Converters to Regulate with VBATT << VOUT
n Selectable Burst Mode Operation Allows Low 28µA IQ with High Voltage Channels Active
n Programmable Power-On Reset n Individual Channel Power Good Indicators n Step-Down Switching Frequency: 250kHz to 2.2MHz n Available in 40-Lead QFN (6mm × 6mm) Package
n Automotive Stop-Start and Cold Crank Ride Through n Last-Gasp CPU Power Hold-Up n Industrial Controls and Power Supplies
The LT8603 is a highly flexible, quad output regulator combining two high input voltage capable monolithic step-down switching regulators, one low input voltage capable monolithic step-down regulator, and a boost controller to satisfy a wide range of applications while occupying minimal board space.
With the boost controller configured to supply the chip VIN supply, the LT8603 produces three precisely regulated outputs even when the boost input voltage falls significantly below the regulated output voltages, such as during an automotive cold crank scenario. Alternatively, with the boost controller driven from one of the step-down regulator outputs or configured as a SEPIC, the LT8603 provides four precisely regulated outputs over a wide input voltage range.
The LT8603 provides robust regulation by including a cycle-by-cycle current limit for all step-down regulators, thermal shutdown, and a boost controller that can tolerate reverse battery connections and negative transient input voltages down to –42V.APPLICATIONS
LT8603 42V, Low IQ, Quad Output Triple Monolithic Buck Converter and Boost Controller
Cold Crank Tolerant Automotive Triple Output Supply
LT8603 Response to a Cold Crank Automotive Input Waveform
8603 TA01a
OUT48V FOR 2V < VBATT < 8.5V
GND
PORENPOREN
VBATT2V TO 42V
(BOOSTSTART-UP
ABOVE 4.3V)
LT8603
FB4
GATE4
ISN4
PG1-4BIAS
RST
PG1-4OUT2
RESET
ISP4PVIN1VINEN/UVLO PVIN2
BST2
OUT31.2V, 1.8A
SW3
FB3
OUT23.3V, 2.5A – IPVIN3
SW2
FB2
PVIN3
BST1
OUT15V, 1.5A
SW1
FB1TRKSS1-2
CPOR
RT
SYNC
FSEL4BFSEL4AINTVCC
INTVCC4
RUN3
2
4
TIME (10ms/DIV)
VOLTAGE2V/DIV
0V
8603 TA01b
VBATTVOUT4
VOUT1
VOUT2
VOUT3
UJ PACKAGE 40-LEAD (6mm × 6mm) PLASTIC QFN
LT8603EUJ LT8603IUJ
3940 38 37 36 35 34 33 32 31
11 2012 13 14 15
TOP VIEW
41GND
UJ PACKAGE40-LEAD (6mm × 6mm) PLASTIC QFN
16 17 18 19
22
23
24
25
26
27
28
29
9
8
7
6
5
4
3
2
PG1
GND
SW1
BST1
BST2
SW2
SW2
GND
BIAS
PG2
RUN3
RT
INTVCC
FB3
FB1
FB2
FB4
VIN
EN/UVLO
TRKSS1
PG3
PORE
N
GND
PVIN
1
SW3
GND
PVIN
3
SYNC
RST
CPOR
PG4
FSEL
4A
GND
PVIN
2
GATE
4
INTV
CC4
FSEL
4B
ISN4
ISP4
TRKS
S2
21
30
10
1
Switching Regulators—Monolithic
Find your local sales office: www.linear.com/contact
LTC7150S
VIN 3.1V to 20V
VOUT ≥0.6V @ 20A
Info & Free Samples
, LT, LTC, LTM, Linear Technology, the Linear logo, and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
www.linear.com/product/LTC7150S1-800-4-LINEAR
Selected Monolithic Single & Dual Buck Regulators
Need a high performance, high power point-of-load power supply for your digital IC (FPGA, uP, uC, DSP, GPU, PLD, ASIC)? The LTC7150S is a 20A, high efficiency monolithic synchronous buck regulator that incorporates Silent Switcher 2 technology, delivering excellent EMI performance while easing board layout. Its phase-lockable controlled on-time current mode architecture enables large step-down ratios at high switching frequencies to deliver high power density solutions. PolyPhase operation allows multiple LTC7150S regulators to run in parallel out-of-phase, reducing the amount of required input and output capacitance. Its operating supply voltage range is 3.1V to 20V, with an output voltage range of 0.6V to VIN. With an operating frequency programmable from 400kHz to 3MHz, it can use physically smaller inductor and capacitor sizes, and can be externally synchro-nized over the same range for noise sensitive applications.
12VIN to 1.2VOUT, 92% Efficient Monolithic Buck
20VIN & 20AOUT
Silent Switcher®2
LTC7150S
LTC7151S*
LT8642S*
LT8652S*
LTC3636
LTC7124
3.1V to 20V3.1V to 20V3V to 18V3V to 18V
3.1V to 20V3.1V to 17V
20A15A10A
8.5A/8.5A6A/6A
3.5A/3.5A
3MHz3MHz3MHz3MHz4MHz4MHz
YesYesNoYesNoNo
5 x 6 x 1.3mm BGA
4 x 5 x 0.75mm LQFN
4 x 4 x 0.94mm LQFN
4 x 7 x 0.94mm LQFN
4 x 5 x 0.75mm QFN
3 x 5 x 0.75mm QFN
Part Number Freq (Max) DifferentialRemote Sense
SS 2 ^^ SS 2 ^^SS 2 ^^SS 2 ^^
NoNo
SilentSwitcher PackageVIN RangeIOUT
0.6V to VIN
0.5V to VIN
0.6V to VIN
0.6V to VIN
0.6V to 12V0.6V to VIN
VOUT Range
* Future product, please contact for more information. ^^ SS 2 = noise-cancelling hot loops and integrated capacitors
12
10
8
6
4
2
0
100
95
90
85
80
75
700 4 8 12 16 20
POWER LOSS (W
)EFFI
CIEN
CY (%
)
IOUT (A)
Efficiency and Power Loss
14
FEATURES DESCRIPTION
Switching Regulators—Monolithic
n Silent Switcher 2 Architecture: n Ultralow EMI on Any PCB n Eliminates PCB Layout Sensitivity n Internal Bypass Capacitors Reduce Radiated EMI n Optional Spread Spectrum Modulation
n 4A DC from Each Channel Simultaneously n Up to 6A on Either Channel n Ultralow Quiescent Current Burst Mode Operation:
n 6.2μA IQ Regulating 12VIN to 5VOUT1 and 3.3VOUT2 n Output Ripple <10mVP-P
n Optional External VC Pin: Fast Transient Response and Current Sharing (Extra 50µA IQ/Channel)
n Forced Continuous Mode n High Efficiency at High Frequency n 94.6% Efficiency at 2A, 5VOUT from 12VIN at 2MHz n 93.3% Efficiency at 4A, 5VOUT from 12VIN at 2MHz n Fast Minimum Switch-On Time: 40ns n Wide Input Voltage Range: 3.0V to 42V n Adjustable and Synchronizable: 300kHz to 3MHz n Small 4mm × 6mm 32-Lead LQFN Package
n General Purpose Step-Down n Automotive and Industrial Supplies
The LT8650S is a dual step-down regulator that delivers up to 4A of continuous current from both channels and supports loads up to 6A from each channel. The LT8650S features the second generation Silent Switcher architecture to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes integration of bypass capacitors to optimize high frequency current loops and make it easy to achieve advertised EMI performance by eliminating layout sensitivity.
The fast, clean, low overshoot switching edges enable high efficiency operation even at high switching frequencies, leading to a small overall solution size. Peak current mode control with a 40ns minimum on-time allows high step down ratios at high switching frequencies.
Burst Mode operation features a 6.2μA quiescent current resulting in high efficiency at low output currents, forced continuous mode allows fixed switching frequency operation over the entire output load range, and spread spectrum operation can further reduce EMI emissions. External VC pins allow optimal loop compensation for fast transient response. The VC pins can also be used for current sharing and the CLKOUT pin enables synchronizing two LT8650S chips to generate a 4-phase, 16A supply. APPLICATIONS
LT8650S Dual Channel 4A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2µA Quiescent Current
Efficiency
5V/4A, 3.3V/4A 2MHz Step-Down Converter
LQFN PACKAGE 32-LEAD (6mm × 4mm × 0.94mm)
LT8650SEV LT8650SIV
LQFN PACKAGE32-LEAD (6mm × 4mm × 0.94mm)
TOP VIEW
272829303132
VC1
FB1
SS1
SS2
FB2
VC2
SYNCPG
2
PG1
TEM
P
EN2
EN1
161514131211
26
25
24
23
22
20
19
18
17
BIAS
VCC
BST1
SW1
SW1
SW2
SW2
BST2
CLKOUT
1
2
4
5
7
8
10
RT
GND
VIN1
VIN1
VIN2
VIN2
GND
33GND
34GND
35GND
36GND
37GND
38GND
8650s TA01a
VIN2VIN23.7V TO 42V
VOUT23.3V4A
EN/UV2
LT8650S
SW2
FB2
VC2 VCC
SS2
4.7µF1.0µH
BIAS
VIN1
EN/UV1
SW1
FB1
VC1VCC
SS1
RT
10nF
4.7pF 47µF×21M
316k
VIN15.4V TO 42V
VOUT15V4A
4.7µF
10nF
47µF×2 4.7pF 1M
191k
1.0µH
1µF15k
fSW = 2MHz
GND SYNCVCC
LOAD CURRENT (A)0 1 2 3 4 5 6
40
45
50
55
60
65
70
75
80
85
90
95
100
EFFI
CIEN
CY (%
)
CH1 5VCH2 3.3V
VIN1 = VIN2 = 12VfSW = 2MHz
8650s TA01b
Protected by U.S. Patents, including 8823345.
15
FEATURES DESCRIPTION
Switching Regulators—Controllers
n 4-Switch Current Mode Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
n Wide VIN Range: 4.5V to 150V n Wide Output Voltage Range: 1.2V ≤ VOUT ≤ 150V n Synchronous Rectification: Up to 99% Efficiency n ±1% 1.2V Voltage Reference n Input or Output Average Current Limit n Onboard LDO or External NMOS LDO for DRVCC n 36V EXTVCC LDO Powers Drivers n Programmable 6V to 10V DRVCC Optimizes Efficiency n No Top FET Refresh Noise in Boost or Buck Mode n VOUT Disconnected from VIN During Shutdown n Phase-Lockable Fixed Frequency (50kHz to 600kHz) n No Reverse Current During Start-Up n Power Good Output Voltage Monitor n 150V Rated RUN Pin with Accurate Turn-On Threshold n Programmable Input Overvoltage Lockout n Thermally Enhanced FE38 TSSOP Package Modified for High Voltage Operation
n Industrial, Automotive, Medical, Military, Avionics
The LTC3779 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phase-lockable frequency of up to 600kHz, while an input/output constant current loop provides support for battery charging.
With a wide 4.5V to 150V input and output range and seamless transfers between operating regions, the LTC3779 is ideal for automotive, telecom and battery-powered systems.
The LTC3779 features a precision 1.2V reference and power good output indicator. The MODE pin can select between pulse-skipping mode or forced continuous mode of operation. Pulse-skipping mode offers high efficiency at light load while forced continuous mode operates at a constant frequency for noise sensitive applications. The PLLIN pin allows the IC to be synchronized to an external clock. The SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.
APPLICATIONS
LTC3779 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller
FE PACKAGEVARIATION: FE38(31)
38-LEAD PLASTIC TSSOPLTC3779EFE LTC3779IFELTC3779HFE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
TOP VIEW
FE PACKAGEVARIATION: FE38(31)
38-LEAD PLASTIC TSSOP
38
37
36
34
32
30
28
26
24
22
21
20
BG1
VINOV
DRVSET
SGND
EXTVCC
NDRV
DRVCC
V5
SS
VFB
SENSEP
SENSEN
ITH
SGND
MODE
PLLIN
FREQ
PGOOD
BG2
SW1
TG1
BOOST1
VIN
VINSNS
VOUTSNS
IAVGSNSN
IAVGSNSP
RUN
BOOST2
TG2
SW2
39PGND
Efficiency and Power Loss vs Input Voltage
VOUT = 48VIOUT = 10A
EFFICIENCY
POWER LOSS
VIN VOLTAGE (V)0 12 24 36 48 60 72 84 96 108 120
90
92
94
96
98
100
0
6
12
18
24
30
EFFI
CIEN
CY (%
)
POWER LOSS (W
)
3779 TA01b
4.7µF
4mΩ
4mΩ
30µF
475k
15µH0.22µF
0.22µF12.1k
3779 TA01a
10k100pF
10nF
2.2µF
0.1µF
56.2k
FREQ
IAVGSNSN
IAVGSNSP
ITH
RUN
SENSEN
SENSEP
SS
VFB
VINOV
VINSNS
VOUTSNS
BOOST1
BOOST2
DRVCC
NDRV
PGND
SGND
SW1
SW2
V5
VIN
TG1
BG1
BG2
TG2
LTC3779
100Ω
100Ω
220pF
1k
1k
1.21k
133k
10µF
10k
5Ω
0.1µF
5µF 56µF
VIN20V TO
120V 20µFVOUT48V10A
100Ω
100Ω
16
FEATURES DESCRIPTION
Switching Regulators—Controllers
n Phase Extender for High Phase Count Voltage Rails n Operates with Power Blocks, DrMOS or External Gate Drivers and MOSFETs
n Accurate Phase-to-Phase Current Sharing n Sub-Milliohm DCR Current Sensing n Phase-Lockable Fixed Frequency 250kHz to 1MHz n Immediate Response to Master IC's Fault n Up to 12-Phase Operation n Wide VIN Range: 4.5 to 38V n VOUT Range: Up to 3.5V (LOWDCR Pin High) Up to 5.5V (LOWDCR Pin Low)
n Proprietary Current Mode Control Loop n Programmable CCM/DCM Operation n Programmable Phase Shift Control n 24-Lead (4mm × 4mm) QFN Package
n High Current Distributed Power Systems n Telecom, Datacom and Storage Systems n Intelligent Energy Efficient Power Regulation
The LTC3874-1 is a dual PolyPhase current mode synchronous step-down slave controller. It enables high current, multiphase applications when paired with a companion master controller by extending the phase count. Compatible master controllers include the LTC3884-1, LTC3774, LTC3875, LTC3877 and LTC3866. The LTC3874-1 employs a unique architecture that enhances the signal-to-noise ratio of the current sense signal, allowing the use of sub-milliohm DC resistance power inductors to maximize efficiency while reducing switching jitter. Its peak current mode architecture allows for accurate phase-to-phase current sharing even for dynamic loads.
Effectively working with a master controller, the LTC3874-1 supports all the programmable features as well as fault protection.
APPLICATIONS
LTC3874-1 PolyPhase Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing
High Efficiency, 4-Phase 1.8V/120A Step-Down Supply
4-Phase Efficiency and Power Loss vs Output Current, Sub-Milliohm DCR
vs Traditional DCR
UF PACKAGE 24-LEAD (4mm × 4mm) PLASTIC QFN
LTC3874EUF-1 LTC3874IUF-1
VIN = 12VVOUT = 1.8VfSW = 425kHzCCM
EFFICIENCY
POWER LOSS
0.29mΩ1.5mΩ0.29mΩ1.5mΩ
LOAD CURRENT (A)0 10 20 30 40 50 60 70 80 90 100 110 120
70
75
80
85
90
95
100
2
5
8
11
14
17
20EF
FICI
ENCY
(%)
POWER LOSS (W
)
38741 TA01b
24 23 22 21 20 19
7 8 9
TOP VIEW
UF PACKAGE24-LEAD (4mm × 4mm) PLASTIC QFN
25GND
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18ISENSE0+
ISENSE0–
RUN0
RUN1
ISENSE1–
ISENSE1+
VCC0
VIN
INTVCC
EXTVCC
VCC1
PWM1
MOD
E0
I TH0
LOW
DCR
FAUL
T0
FAUL
T1
PWM
0
MOD
E1
I TH1
FREQ
ILIM
SYNC
PHAS
MD
PWM0 PWM1LTC3874-1
INTVCC
0.22µF
VCC0VCC1
PHASMDLDWDCR
ILIM
FREQGND
RUN0
SYNC
RUN1FAULT0FAULT1
RUN0
649Ω
(0.29mΩ DCR)0.215µH
(0.29mΩ DCR)0.215µH
FAULT0FAULT1
RUN1
SYNC
REFER TO LTC3884-1 DATA SHEETFOR MASTER SETUP
PIN NOT USED IN THIS CIRCUIT: EXTVCC
ITH0ITH1
VSENSE0+1.8V
100µF×3
100µF×3
470µF×2
470µF×2
LTC3884-1
ISENSE0+
ISENSE0–
ISENSE1+
ISENSE1–
ITH0ITH1
VSENSE1+
VIN7V TO 14V
VOUT1.8V120A
VIN
PGOOD0PGOOD1
MODE0MODE1
38741 TA01a
100k
DrMOS DrMOS
+ 0.22µF
4.7µF
+
649Ω
Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6144194, 6177787, 6580258, 5408150.
17
FEATURES DESCRIPTION
Switching Regulators—Controllers
94% Efficiency 24W (16V, 1.5A) 2MHz Buck-Boost LED Driver
Efficiency vs VIN
n 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
n Up to 95% Efficiency at 2MHz n Proprietary Peak-Buck Peak-Boost Current Mode n Wide VIN Range: 4V to 60V n Wide VOUT Range: 0V to 60V (51V LED) n ±3% LED Current Accuracy n 2000:1 External and 128:1 Internal PWM Dimming n High Side PMOS PWM Switch Driver n No Top MOSFET Refresh Noise in Buck or Boost n Adjustable and Synchronizable: 600kHz to 2MHz n Flicker-Free Spread Spectrum for Low EMI n Open and Short LED Protection with Fault Reporting n Available in 28-Lead TSSOP with Exposed Pad and 28-Lead QFN (4mm × 5mm)
n Automotive Head Lamps/Running Lamps n High Frequency LED Lighting
The LT8391A is a synchronous 4-switch buck-boost LED controller that regulates LED current from input voltage above, below or equal to the output voltage. The proprietary peak-buck peak-boost current mode control scheme allows adjustable and synchronizable 600kHz to 2MHz fixed frequency operation, or internal 25% triangle spread spectrum operation for low EMI. With 4V to 60V input, 0V to 60V output, and seamless low noise transitions between operation regions, the LT8391A is ideal for LED driver and battery charger applications in automotive, industrial and battery-powered systems.
The LT8391A provides both internal (up to 128:1) and external (up to 2000:1) LED current PWM dimming with a high side PMOS switch. Two CTRL pins provide flexible 20:1 analog dimming with ±3% LED current accuracy at 100mV full scale. Fault protection is provided to detect an open or short LED condition, during which the LT8391A retries, latches off or keeps running.
APPLICATIONS
LT8391A 60V 2MHz Synchronous 4-Switch Buck-Boost LED Driver Controller
UFD PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN
LT8391AEUFD LT8391AIUFD LT8391AHUFD
FE PACKAGE 28-LEAD PLASTIC TSSOP
LT8391AEFE LT8391AIFE LT8391AHFE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
FE PACKAGE28-LEAD PLASTIC TSSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
BG1
BST1
SW1
TG1
LSP
LSN
VIN
INTVCC
EN/UVLO
RP
PWM
VREF
CTRL1
ISP
BG2
BST2
SW2
TG2
VOUT
PWMTG
SYNC/SPRD
RT
VC
FB
SS
FAULT
CTRL2
ISN
29GND
165k
22nF
4.7µF 0.1µF22µF
383k
4.7µF100k
0.47µF
59.0k
3.3nF
4.7k
1M48.7k
10µF
100k
90.9k
0.1µF
1µF 1µF
2.2µH6mΩ
56mΩ
300k
113k
EN/UVLO
VREF
CTRL1FAULT
BG2
BST2
TG2
INTVCC
FB
VOUT
ISP
ISN
SYNC/SPRD
VIN6V TO 32V CONTINUOUS
4V TO 56V TRANSIENT
2MHz
63V100V
×225V×2
FAULT
LSP LSNSW1 SW2BST1
TG1
BG1
VIN LT8391A
SS VC RT
GND
SSFM OFF
SSFM ON
INTVCCINTVCC
INTVCC
PWMTG
16V1.5ALEDs
PWM
RPCTRL2
ANALOG DIM PWM DIM
PWM SETTING
488Hz
EXT INT
8391a TA01a
9 10
TOP VIEW
UFD PACKAGE28-LEAD (4mm × 5mm) PLASTIC QFN
11 12 13
28 27 26 25 24
14
23
6
5
4
3
2
1TG1
LSP
LSN
VIN
INTVCC
EN/UVLO
RP
PWM
TG2
VOUT
PWMTG
SYNC/SPRD
RT
VC
FB
SS
SW1
BST1
BG1
BG2
BST2
SW2
V REF
CTRL
1
ISP
ISN
CTRL
2
FAUL
T
7
17
18
19
20
21
22
16
8 15
29GND
INPUT VOLTAGE (V)0 5 10 15 20 25 30 35 40 45
60
65
70
75
80
85
90
95
100
EFFI
CIEN
CY (%
)
8391a TA01b
18
FEATURES DESCRIPTION
Switching Regulators—Controllers
n Easily Configurable as a Synchronous Buck, Boost, SEPIC, ZETA or Nonsynchronous Buck-Boost Converter
n Wide Input Range: 4.5V to 42V (VIN Can Operate to 0V, when EXTVCC > 4.5V)
n Automatic Low Noise Burst Mode Operation n Low IQ in Burst Mode Operation (15μA Operating) n Input Voltage Regulation for High Impedance Source n 100% Duty Cycle in Dropout (Buck Mode) n 2A Gate Drivers (BG and TG) n Adjustable Soft-Start with One Capacitor n Frequency Programmable from 100kHz to 750kHz n Can Be Synchronized to External Clock n Available in 20-Lead TSSOP and 20-Lead 3mm × 4mm QFN Packages
n General Purpose DC/DC Conversion
n Automotive Systems n Industrial Supplies n Solar Panel Power Converter
The LT8711 is a multitopology current mode PWM controller that can easily be configured as a synchronous buck, boost, SEPIC, ZETA or as a nonsynchronous buck-boost converter. Its dual gate drive voltage inputs optimize gate driver efficiency.
The 15µA no-load quiescent current with the output voltage in regulation extends operating run time in battery powered systems. Low ripple Burst Mode operation enables high efficiency at very light loads while maintaining low output voltage ripple. The LT8711's fixed switching frequency can be set from 100kHz to 750kHz or can be synchronized to an external clock.
The additional features include 100% duty cycle capability when in buck mode, a topology selection pin and adjustable soft-start. LT8711 is available in the 20-lead TSSOP and 20-lead 3mm × 4mm QFN packages.
APPLICATIONS
LT8711 Micropower Synchronous Multitopology Controller with 42V Input Capability
FE PACKAGE 20-LEAD PLASTIC TSSOP
LT8711EFE LT8711IFE
FE PACKAGE20-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
9
10
TOP VIEW
20
19
18
17
16
15
14
13
12
11
EN/FBIN
FB
VC
SS
OPMODE
ISP
ISN
INTVEE
BIAS
TG
RT
SYNC
NC
CSP
CSN
EXTVCC
VIN
INTVCC
NC
BG
21GND
UDC PACKAGE 20-LEAD (3mm × 4mm) PLASTIC QFN
LT8711EUDC LT8711IUDC
20 19 18 17
7 8
TOP VIEW
21GND
UDC PACKAGE20-LEAD (3mm × 4mm) PLASTIC QFN
9 10
6
5
4
3
2
1
11
12
13
14
15
16VC
SS
OPMODE
ISP
ISN
INTVEE
CSP
CSN
EXTVCC
VIN
INTVCC
NC
FB EN/F
BIN
RT SYNC
BIAS TG NC BG
BIAS
INTVEE
TG
BGCSPCSN
2.2µF
2.2µF
100pF
60.4k
110k
330nF
100pF
2.2nF
ISN
ISPGND
EN/FBINEXTVCC
OPMODE
INTVCC
RTSYNC
SS
VC
1M4mΩ
69.8k
100µF ×216V, X7R
VOUT12V, 3.5A (VIN >16V)2.5A (9V < VIN < 16V)1.5A (VIN < 9V)
10µF ×650V, X7R
VIN5V TO
40V
LT8711
FB
VIN
VOUT
M1
D1L1
4.7µH D2
M2
4mΩ
8711 TA01a
400kHz 5V to 40V Input/12V Output Nonsynchronous Buck-Boost
LOAD CURRENT (A)0.001 0.01 0.1 1 40
10
20
30
40
50
60
70
80
90
100
EFFI
CIEN
CY (%
)
8711 TA01b
VIN = 5VVIN = 12VVIN = 24VVIN = 36V
Efficiency vs Load Current
Our No-Opto isolated flyback devices need no opto-coupler or LT1431 for regulation. The devices sense the reflected isolated output voltage from the primary-side waveform, resulting in better than ±1% load and line regulation. This simplifies the design, enables a smaller solution size and only requires one component crossing the isolation barrier. Several off-the-shelf transformers are shown in the data sheets, making it easy to complete the design.
No-Opto Isolated Flyback Converters
•
•
No Opto orReference
VOUT
SOT-23 SO-SE
GND
SW
RFB
VIN
VIN: 2.7V to 100V
LT830X
Switch
Inside
No-Opto Monolithic Devices (Internal Switch)
No-Opto Controller Devices (External Switch)
Part Number VIN Range (V) Max POUT (W) Power Switch Rating Package
LT8300 6-100 2 0.23A/150V SOT-23
LT8303 5.5-100 5 0.5A/150V SOT-23
LT8301 2.7-42 6 1.2A/65V SOT-23
LT8302 2.8-42 18 3.6A/65V SO-8E
LT8304/LT8304-1 3-100 24 2A/150V SO-8E
LT8315 18-560 15 0.3A/630V TSSOP-20 (16)
Part Number VIN Range Max POUT (W) Description Package
LT3748 5VDC-100VDC 80-100 No-Opto Flyback Controller MSOP-16 (12)
LT8309 4.5VDC-40VDC 80-100 Flyback Synchronous Rectifier Driver SOT-23
LT3798 20-400VDC/90-264VAC 80-100 No-Opto Flyback Controller with PFC MSOP-16E
All registered trademarks and trademarks are the property of their respective owners.
Our No-Opto isolated flyback devices need no opto-coupler or LT1431 for regulation. The devices sense the reflected isolated output voltage from the primary-side waveform, resulting in better than ±1% load and line regulation. This simplifies the design, enables a smaller solution size and only requires one component crossing the isolation barrier. Several off-the-shelf transformers are shown in the data sheets, making it easy to complete the design.
No-Opto Isolated Flyback Converters
•
•
No Opto orReference
VOUT
SOT-23 SO-SE
GND
SW
RFB
VIN
VIN: 2.7V to 100V
LT830X
Switch
Inside
No-Opto Monolithic Devices (Internal Switch)
No-Opto Controller Devices (External Switch)
Part Number VIN Range (V) Max POUT (W) Power Switch Rating Package
LT8300 6-100 2 0.23A/150V SOT-23
LT8303 5.5-100 5 0.5A/150V SOT-23
LT8301 2.7-42 6 1.2A/65V SOT-23
LT8302 2.8-42 18 3.6A/65V SO-8E
LT8304/LT8304-1 3-100 24 2A/150V SO-8E
LT8315 18-560 15 0.3A/630V TSSOP-20 (16)
Part Number VIN Range Max POUT (W) Description Package
LT3748 5VDC-100VDC 80-100 No-Opto Flyback Controller MSOP-16 (12)
LT8309 4.5VDC-40VDC 80-100 Flyback Synchronous Rectifier Driver SOT-23
LT3798 20-400VDC/90-264VAC 80-100 No-Opto Flyback Controller with PFC MSOP-16E
All registered trademarks and trademarks are the property of their respective owners.
LT8303 Telecom/Datacom Isolated Schematic
Output Load and Line Regulation
Features n Input Voltage Ranging from 2.7V to 400V n No Opto-Coupler Required n Primary-Side VOUT Sensing n Only One Part Crossing the Isolation Barrier n Internal Loop Compensation for Monolithic Required Devices n Compact Packages n Off-the-Shelf Transformers from Wurth, Sumida and Pulse Engineering
Applications n Telecom/Datacom n Industrial Controls n Automotive n Factory Automation n Heavy Equipment n Medical n Robotics and Aviation n Housekeeping Supplies
1.25cm
3cm
T16:1
150µH 4.2µH4.7µF
VIN6V TO 80V
VOUT+
5V
VOUT–
LT8303
RFB
SWEN/UVLO
VIN
GND
316k2.5mA TO 0.33A (VIN = 12V)2.5mA TO 0.52A (VIN = 24V)2.5mA TO 0.73A (VIN = 48V)2.5mA TO 0.84A (VIN = 72V)
•
•
100µF
VIN = 12VVIN = 24VVIN = 48VVIN = 72V
LOAD CURRENT (mA)
0 100 200 300 400 500 600 700 800 9004.7
4.8
4.9
5.0
5.1
5.2
5.3
OUTP
UT V
OLTA
GE (V
)
VIN = 12VVIN = 24VVIN = 48VVIN = 72V
LOAD CURRENT (mA)
0 100 200 300 400 500 600 700 800 90040
50
60
70
80
90
100
EFFI
CIEN
CY (%
)
Efficiency vs Load Current
LT8303 Demo Board Photo
SOT-23
1016
www.linear.com/830X n 1-800-454-6327
Description
400mA boost converter with MPP control and 250mV start-up
300mA buck-boost converter and power manager with MPPC
Ultralow voltage converter and primary battery life extender
Ultralow voltage boost converter and system manager
Auto-polarity version of LTC3108
Energy harvesting DC/DC converter with battery life extender
Piezoelectric energy harvesting power supply
Power tracking 2A solar battery charger
Nanoamp operating current shunt Li-Ion battery charger
Energy SourcePart Number
LTC®3105
LTC3106
LTC3107
LTC3108
LTC3109
LTC3330/31
LTC3588
LT®3652/HV
LTC4070/71
Practical Ambient Energy Harvesting for WSNs
Single Nanopower ICs Manage Multiple Input Sources
All registered trademarks and trademarks are the property of their respective owners.
LT8303 Telecom/Datacom Isolated Schematic
Output Load and Line Regulation
Features n Input Voltage Ranging from 2.7V to 400V n No Opto-Coupler Required n Primary-Side VOUT Sensing n Only One Part Crossing the Isolation Barrier n Internal Loop Compensation for Monolithic Required Devices n Compact Packages n Off-the-Shelf Transformers from Wurth, Sumida and Pulse Engineering
Applications n Telecom/Datacom n Industrial Controls n Automotive n Factory Automation n Heavy Equipment n Medical n Robotics and Aviation n Housekeeping Supplies
1.25cm
3cm
T16:1
150µH 4.2µH4.7µF
VIN6V TO 80V
VOUT+
5V
VOUT–
LT8303
RFB
SWEN/UVLO
VIN
GND
316k2.5mA TO 0.33A (VIN = 12V)2.5mA TO 0.52A (VIN = 24V)2.5mA TO 0.73A (VIN = 48V)2.5mA TO 0.84A (VIN = 72V)
•
•
100µF
VIN = 12VVIN = 24VVIN = 48VVIN = 72V
LOAD CURRENT (mA)
0 100 200 300 400 500 600 700 800 9004.7
4.8
4.9
5.0
5.1
5.2
5.3
OUTP
UT V
OLTA
GE (V
)
VIN = 12VVIN = 24VVIN = 48VVIN = 72V
LOAD CURRENT (mA)
0 100 200 300 400 500 600 700 800 90040
50
60
70
80
90
100
EFFI
CIEN
CY (%
)
Efficiency vs Load Current
LT8303 Demo Board Photo
SOT-23
1016
www.linear.com/830X n 1-800-454-6327
Description
400mA boost converter with MPP control and 250mV start-up
300mA buck-boost converter and power manager with MPPC
Ultralow voltage converter and primary battery life extender
Ultralow voltage boost converter and system manager
Auto-polarity version of LTC3108
Energy harvesting DC/DC converter with battery life extender
Piezoelectric energy harvesting power supply
Power tracking 2A solar battery charger
Nanoamp operating current shunt Li-Ion battery charger
Energy SourcePart Number
LTC®3105
LTC3106
LTC3107
LTC3108
LTC3109
LTC3330/31
LTC3588
LT®3652/HV
LTC4070/71
Practical Ambient Energy Harvesting for WSNs
Single Nanopower ICs Manage Multiple Input Sources
All registered trademarks and trademarks are the property of their respective owners.
We offer a wide range of ultralow power products targeted for Energy Harvesting applications. Power management products that convert energy from Vibration (Piezo), PhotoVoltaic (Solar) and Thermal (TEC, TEG, Thermopiles, Thermocouples) sources provide high efficiency conversion to regulated voltages and charge batteries and/or super capacitor storage elements. These Energy Harvesting ICs automatically manage ambient and battery energy to dramatically extend the run time of a primary battery. Boost converters that operate from as little as 20mV or battery chargers with Maximum Power Point capability expand the possibilities for a wide variety of industrial automation and control, wireless sensor, transportation, automotive and building management applications.
Ultralow quiescent current linear regulators, op amps, comparators, voltage supervisors, analog-to-digital converters, digital-to-ana log converters and micropower voltage references provide additional fundamental building blocks required for autonomous systems.
Energy Harvesting
Part Number Description
Output Power Level
Number of
OutputsEnergy Source Packages Topology IQ
VIN MIN(V)
VIN MAX(V)
LTC3330 Nanopower Buck-Boost DC/DC with Energy Harvesting Battery
Life Extender
0.1mW to 50mW
2 Vibration, Solar (AC or DC)
5mm × 5mm QFN-32
Full Bridge Rectifier,
Buck
750nA 3.0V(EH) 1.8V(VBATT)
19V(EH) 5V(VBATT)
LTC3331 Nanopower Buck-Boost DC/DC with Energy Harvesting
Battery Charger
0.1mW to 50mW
1 Vibration, Solar (AC or DC)
5mm × 5mm QFN-32
Full Bridge Rectifier,
Buck
950nA 3.0V 19V
LTC3107 Ultralow Voltage Energy Harvester and Primary Battery Life Extender
0.01mW to 5mW
2 Thermal 3mm × 3mm DFN-10
Boost 80nA 20mV 500mV
LTC3106 300mA Ultralow IQ Step-Up Converter and Power Manager with MPPC
0.1mW to 160mW
2 Solar 3mm × 4mm QFN-20,
TSSOP-20E
Buck-Boost
1.5µA 330mV 5.5V
Energy Harvesting ICsLTC4071 Li-Ion/Polymer Shunt Battery
Charger System with Low Battery Disconnect
0.1mW to 250mW
1 − DFN-8, MSOP-8
Shunt Battery Charger
550nA None
LTC4070 Li-Ion/Polymer Shunt Battery Charger System
0.1mW to 250mW
1 − DFN-8, MSOP-8E
Shunt Battery Charger
450nA None
LTC3588-1/ LTC3588-2/ LTC3588-3
Piezoelectric Energy Harvesting Power Supply
0.1mW to 50mW
1 Piezoelectric MS-10, DFN-10
Buck 450nA 14 20
LTC3388-1/LTC3388-3
20V, High Efficiency Nano Step-Down Regulator
0.1mW to 250mW
1 All DFN-10, MS-10
Buck 400nA 2.7 20
LTC3526L 550mA 1MHz Synchronous Step-Up DC/DC Converters
in 2mm × 2mm DFN
0.1mW to 650mW
1 Solar DFN-6 Boost 9µA 0.5 5
LTC3109 Auto-Polarity, Ultralow Voltage Step-Up Converter
and Power Manager
0.1mW to 50mW
3 Thermoelectric QFN-20, SSOP-20
Boost 200nA 0.02 0.5
LTC3108/ LTC3108-1
Ultralow Voltage Step-Up Converter and
Power Manager
0.1mW to 50mW
3 Thermoelectric DFN-12, SSOP-16
Boost 200nA 0.02 0.5
LTC3105 400mA Step-Up DC/DC Converter with Maximum Power Point Control and
250mV Start-Up
0.1mW to 1100mW
1 Solar DFN-10, MS-12
Boost 24µA 0.2 5
LT3652HV Power Tracking 2A Battery Charger
1W to 30W 1 Solar DFN-12, MS-12
Buck 19µA 4.95 34
LT3652 Power Tracking 2A Battery Charger for Solar Power
1W to 30W 1 Solar DFN-12, MS-12
Battery Charger
19µA 4.95 32
Energy Harvesting ICs with Battery Life Extenders
0417 REV C
www.linear.com/energyharvesting n 1-800-454-6327
Design Note
165k
22nF
0.1µF100V×2
0.1µF
22µF
383k
4.7µF 100k
0.47µF
59.0k2.2nF
10k
110k
10k
0.1µF
124k75k
0.1µF
1µF 1µF
L11µH
M3
M4M1
M2
1µF
10Ω
10Ω
22µF
22µFD1 D2
5mΩR1
10mΩR2
EN/UVLO
VREF
CTRL
PGOOD
BG2
BST2
TG2
INTVCC
LOADEN
FB
VOUT
ISP
ISN
SYNC/SPRD
TEST
2MHz
63V
16V×2
ISMON
PGOOD
25V
VOUT12V4ALSP LSNSW1 SW2
BST1
TG1
BG1
VIN LT8390A
LOADTG
ISMON
SS VC RT
GND
SSFM OFF
SSFM ON
25V×2
INTVCCINTVCC
INTVCC
dn567 F01
VIN6V TO 28V
(CONTINUOUS)4V TO 60V
(TRANSIENT)4.7µF100V×2
L1: WURTH 74437336010 1µHM1, M2: INFINEON BSZ065NO6LS5M3, M4: INFINEON BSZ031NE2LS5D1, D2: NEXPERIA BAT46WJR1: SUSUMU KRL3216D-M-R005-F-T5
60V 2MHz Buck-Boost Controllers Regulate High Power Voltage and Current with High Efficiency and Low EMI Keith Szolusha
Synchronous buck-boost controllers are versatile and highly efficient. They can produce high power as both a boost and a buck with a single inductor, keeping power supply design simple. Normally, a buck-boost controller in a high power application is operated at a standard or low switching frequency, this maximizes efficiency and avoids complications related to shoot-through and switch blanking time, which can arise in synchronous rectification at high frequencies. Nevertheless, a high frequency 2MHz buck-boost controller with a smaller inductor ensures that the EMI content resides above the AM frequency band.
The LT8390A and LT8391A buck-boost controllers are unique in that they operate at 2MHz. The high switching speed enables use of a small inductor for a compact solution size, even in high power applications.
Unlike monolithic converters, which save space with power switches inside the IC package, controllers can drive external power switches with much higher peak currents,
such as 10A. Such high peak currents would burn up the small IC packages of typical integrated converters, but external 3mm × 3mm synchronous MOSFETs can handle this power. The MOSFETs can be arranged in tight quarters with hot-loop capacitors for very low EMI. The unique peak switch current sense amplifier architecture places the sense resistor next to the power inductor, outside the critical input and output hot loops, also reducing EMI.
2MHz, 95% Efficiency, 12V, 4A Buck-BoostThe 2MHz, 12V, 4A buck-boost regulator in Figure 1 boasts efficiency to 95%. This relatively compact design uses 3mm × 3mm MOSFETs and a single high power inductor. The temperature rise for this converter is low, even at 48W. At 12V input, no component rises more than 45°C above room temperature. At 7V input, the hottest component rises less than 55°C with a standard 4-layer PCB and no heat sink or airflow. This converter handles short input transients down to 4V at 4A load, or runs continuously at 4V input with 2A of load (~25W).
Figure 1. 2MHz 12V, 4A Buck-Boost Voltage Regulator with High Efficiency
10/17/567
All registered trademarks and trademarks are the property of their respective owners. Design Note 567
CONTINUOUS OPERATION WITH HIGHEST COMPONENT TEMPERATURE BELOW 90°C (TA = 25°C)
INPUT VOLTAGE (V)0 5 10 15 20 25 30 35 40
50
60
70
80
90
100
EFFI
CIEN
CY (%
)
dn567 F03
IOUT = 2A
IOUT = 4A
165k
22nF
4.7µF
0.1µF22µF
383k
4.7µF100k
0.47µF
113k
90.9k
59.0k
3.3nF
4.7k
1M54.9k
10µF
100k
0.1µF
1µF
1µF
L12.2µH
M3
M4M1
M2
D1 D2
6mΩR1
56mΩ
M5D3
300k488Hz
FB2
0.1µF
FB1
4.7µF
0.1µF
10Ω
D5
10Ω
D4
EN/UVLO
VREF
CTRL1
FAULT
BG2
BST2
TG2
INTVCC
FB
VOUT
ISP
ISN
SYNC/SPRD
VIN6V TO 40V
(CONTINUOUS)4V TO 60V
(TRANSIENT)
2MHz
63V
100V×2+0.1µF×2
25V×2+0.1µF×2
FAULT
LSP LSNSW1 SW2BST1
TG1
BG1
VIN
LT8391A
SS VC RT
GND
SSFM OFF
SSFM ON
INTVCCINTVCC
INTVCC
PWMTG
PWM
RPCTRL2
ANALOG DIM
PWM DIM
100V×2
16V1.5ALEDs
INPUT EMI FILTER
OUTPUT EMIFILTER
dn567 F02
5.1Ω
5.1Ω
INTERNAL PWM
L1: COILCRAFT XAL5030-222MEBM1, M2: NEXPERIA BUK9M42-60EM3, M4: INFINEON IPZ40N04S5L-7R4M5: NEXPERIA PMV50EPEAD1, D2: NEXPERIA BAT46WJD3: NEXPERIA PMEG3010EBD4, D5: NEXPERIA PMEG2010AEBFB1: 2× PARALLEL TDK MPZ2012S221ATD25FB2: 2× PARALLEL TDK MPZ2012S102ATD25R1: SUSUMU KRL3216D-C-R006-F
Figure 2. Low EMI 16V, 1.5A Automotive Buck-Boost LED Driver Passes CISPR 25 Class 5 EMI
The LT8390A’s high switching frequency (600kHz to 2MHz) distinguishes it from the field of 4-switch controllers. It also has a variety of notable features like its lower frequency cousin, the LT8390. It has a PGOOD flag, short-circuit protection, and a flexible current-limiting sense resistor for output or inrush current restrictions. Its spread spectrum frequency modulation (SSFM) for low EMI makes it ideal for automotive applications.
2MHz Low EMI Automotive Buck-Boost LED DriverThe LT8391A is a 2MHz LED driver counterpart of the LT8390A. The main difference is that LT8391A includes LED driver PWM dimming features and open LED fault protection. The output sense resistor controls current through a string of LEDs whose voltage may lie within the input voltage range, such as the 9V to 16V car battery. It can run down to 4V cold crank and can withstand up to 60V input transients. LT8391A provides up to 2000:1 PWM dimming ratio at 120Hz and it can use its internal PWM dimming generator (no external clock required) for up to 128:1 accurate dimming.
The 2MHz LT8391A LED driver shown in Figure 1 is optimized for automotive headlights. It uses AEC-Q100 components and meets CISPR 25 Class 5 radiated EMI standards. SSFM reduces EMI, and also runs flicker-free simultaneously with PWM dimming.
This compact design features a small inductor and especially small input and output EMI filters. It can run down to 4V and up to 60V. The four synchronous MOSFETs shown can be replaced with two dual MOSFETs for reduced component count when needed. It reaches 93% efficiency. The FAULT flag reports short-circuit and open LED conditions, which are handled with ease.
ConclusionThe LT8390A and LT8391A 2MHz 60V buck-boost controllers can regulate high power voltage and current in compact spaces. The low EMI architecture and SSFM feature make these ideal for low EMI applications.
Figure 3. LT8390A Efficiency of Figure 1
© ANALOG DEVICES, INC. 2017
DN567 LT/AP 1017 71K • PRINTED IN THE USA
Data Sheet DownloadFor applications help, call (408) 432-1900www.linear.com/LT8390A
Cool Running, 144W, 4 × 40A µModule POL Regulator
IntroductionThe LTM®4636 is a 40A-capable µModule® regulator featuring 3D packaging technology, or component-on-package (CoP) to keep it cool—see Figure 1. The body of the device is an overmolded 16mm × 16mm × 1.91mm BGA package with an inductor stacked on top to expose it to cooling airflow. The total package height is 7.16mm.
In addition to dissipating heat from the top through the exposed inductor, the LTM4636 efficiently disperses heat to the PCB via 144 BGA solder balls dedicated to GND, VIN and VOUT—where high current flows.
A single LTM4636 is rated for 40A loads; two parallel converters can support 80A; four support 160A. Upscaling a power supply by paralleling LTM4636s is easy: simply copy and paste the single-regulator footprint, as shown in Figure 1.
The current mode architecture of the LTM4636 enables precision current sharing among the 40A blocks. Precise current sharing, in turn, produces a power supply that spreads the heat evenly between devices. Figure 2 shows that all devices in the 4-µModule 160A regulator operate within 1°C of each other, ensuring that no individual device is overloaded or overheated. This greatly simplifies heat mitigation.
Figure 3 shows the complete 160A design. Note that no clock device is required for the LTM4636s to operate out-of-phase to each other—clocking and phase control is included. Multiphase operation reduces input and output ripple current, reducing the number of required input and output capacitors. Here, the four LTM4636s run 90° out-of-phase.
ConclusionChoosing a POL regulator for a densely populated system requires scrutiny beyond voltage and amperage ratings of the device. Evaluation of package thermal characteristics is essential, as it determines the cost of cooling, the cost of the PCB and final product size.
10/17/569
All registered trademarks and trademarks are the property of their respective owners.
Figure 1. 3D Packaging of the LTM4636 Puts One of the Hottest Components, the Inductor, on Top, Where Significant Surface Area Is Exposed to Airflow. It Is Easy to Lay Out Parallel LTM4636s to Scale Power Capability—Simply Duplicate the Layout of One Channel and Multiply. The Clean Layout Here Shows Four Channels at 40A Each.
Design Note 569
Design NoteAfshin Odabaee and Yan Liang
Figure 2. Precision Current Sharing Among Four LTM4636s Running in Parallel, Resulting in Only 40°C Rise in Temperature for 160A Application.
DN529 F01
VIN = 12V, VOUT = 0.9V, IOUT = 160A Airflow = 400LFM Efficiency = 88%
DN529 F02
+
COMPACOMPBTK/SS
RUNCRUNPHIZREG
PHMODEFREQMODE/PLLINCLKOUT
TMON
PWM
SW
VOUT
TEMP+ TEMP– SNSP1 SNSP2 SGND
VIN
34.8k
22µF
VOLTAGE OUTTEMP MONITOR
22µF16V
22µF16V
22µF16V
22µF16V
150µF35V
7V TO 14V
12V
12V
12V
INTVCC2
RUNCRUNP
CLK2CLK1
COMPTK/SS
OPTIONAL TEMP MONITORFOR TELEMETRY READBACK ICs
INTVCC
INTVCC2 5V PVCC2
U2LTM4636
PVCC
PGND
VFB
VOUTS1–
VFB POWER GND
PWM2 TP
470µF6.3V+
470µF6.3V
100µF6.3V×4
GND_SNS
2.2Ω, 08052200pF
2200pF
VOUT
+
COMPACOMPB
TK/SS
RUNCRUNPHIZREG
TMON
PWM
SW
VOUT
TEMP+ TEMP– SNSP1 SNSP2 SGND
VIN
34.8k
4.99k
5VPVCC1
22µF
VOLTAGE OUTTEMP MONITOR
CSS0.47µF
0.47µFINTVCC1
RUNCRUNP
CLK1
COMPTK/SS
OPTIONAL TEMP MONITORFOR TELEMETRY READBACK ICs
INTVCC
INTVCC1 5V PVCC1
U1LTM4636
PVCC
PGND
VFBVFB
PWM1 TP
470µF6.3V
RFB2.5k
+470µF6.3V
100µF6.3V×4
VOUTS1–
VOUTS1+
2.2Ω, 0805
0.9VAT160A
+
COMPACOMPBTK/SS
RUNCRUNPHIZREG
PHMODEFREQMODE/PLLINCLKOUT
TMON
PWM
SW
VOUT
TEMP+ TEMP– SNSP1 SNSP2 SGND
VIN
34.8k
22µF
GND_SNS
VOLTAGE OUTTEMP MONITOR
INTVCC3
RUNCRUNP
CLK3CLK2
TK/SS
COMP
OPTIONAL TEMP MONITORFOR TELEMETRY READBACK ICs
PINS NOT USED IN CIRCUIT U2: PGOOD, TEST1, TEST2, TEST3, TEST4, VOUTS1, GMON
PINS NOT USED IN CIRCUIT U1: PGOOD, TEST1, TEST2, TEST3, TEST4, GMON
PINS NOT USED IN CIRCUIT U3: PGOOD, TEST1, TEST2, TEST3, TEST4, VOUTS1, GMON
PINS NOT USED IN CIRCUIT U4: PGOOD, TEST1, TEST2, TEST3, TEST4, VOUTS1, GMON
INTVCC
INTVCC3 5V PVCC3
U3LTM4636
PVCC
PGND
VFB VFB
PWM3 TP
470µF6.3V+
470µF6.3V
100µF6.3V×4
GND_SNS
2.2Ω, 08052200pF
+
COMPACOMPBTK/SS
RUNCRUNPHIZREG
PHMODEFREQMODE/PLLIN
TMON
PWM
SW
VOUT
TEMP+ TEMP– SNSP1 SNSP2 SGND
VIN
34.8k
22µF
VOLTAGE OUTTEMP MONITOR
INTVCC4
RUNCRUNP
CLK3
COMPTK/SS
OPTIONAL TEMP MONITORFOR TELEMETRY READBACK ICs
INTVCC
INTVCC4 5V PVCC4
U4LTM4636
PVCC
PGNDVFB
VOUTS1–
VFB
PWM4 TP
470µF6.3V+
470µF6.3V
100µF6.3V×4GND_SNS
2.2Ω, 08052200pF
100pF
VOUTS1–
+
22µF16V
22µF16V
22µF16V
22µF16V
22µF16V
22µF16V
22µF16V
22µF16V
22µF16V
22µF16V
22µF16V
22µF16V
PHMODEFREQMODE/PLLINCLKOUT
SGND
SGND
SGND
SGND
SGNDSGND
SGND
SGND
SGND
SGND
SGND
SGND
SGND
SGND
SGND
DN569 F03
© ANALOG DEVICES, INC. 2017
DN569 LT/AP 1017 305K • PRINTED IN THE USA
Data Sheet Downloadwww.linear.com/LTM4636 For applications help, call (408) 432-1900
Figure 3. 140W Regulator Features Four LTM4636s Running in Parallel with Precision Current Sharing and High Efficiency 12V Input to 0.9V Output at 160A
More Info Features
, LT, LTC, LTM, Linear Technology, the Linear logo,and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.
www.linear.com/product/LTC78201-800-4-LINEAR
• VIN Range: 6V to 72V, 80V abs max• Voltage Divider (2:1)/Doubler (1:2)/
Inverter (1:-1)• High Power Density: Up to 4000W/in3
• Capable of 500W+• Soft Switching – Low EMI• Overload, OV/UV Protection• Fault Protection/Programmable Timer• Operating Frequency: 100kHz to 1MHz• 4mm x 5mm QFN-28 Package
Efficiency vs Load Current
OUTPUT LOAD CURRENT (A)
EFFI
CIEN
CY (%
)
100
99
98
97
96
95
94
93
920 2 4 6 8 10 12 14 16 18 20
48V to 24V
The LTC7820 brings a new level of performance and simplicity to fixed ratio non-isolated bus converters by eliminating the power inductor, providing a 50% reduction in circuit size compared to alternative solutions. It drives external MOSFETs in either a voltage divider (2:1), doubler (1:2) or inverter (1:-1) configuration with up to 99% efficiency and a power density of up to 4000W/in3. Multiple LTC7820s can be cascaded for higher conversion ratios. Its open loop fixed duty cycle is ideal for non-isolated intermediate bus applications commonly found in power distribution, datacom, telecom, computing and industrial systems.
500WInductorless Bus Converter
99% Efficient Step-Down, Step-Up or Invert
Find your local sales office: www.linear.com/contact
28mm
6mm28mm
Top Bottom Side
No Airflow
No Heat Sink
© 2017 Analog Devices, Inc. • MC 1217 7.5K • Printed in U.S.A