LM4766 Overture Audio Pwr Amp Series Dual 40W Audio Pwr Amp w/ Mute (jp)LM4766 Overture Audio Power Amplifier Series Dual 40W Audio Power
Amplifier with Mute
Literature Number: JAJS634
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4766
40W
(
)
fixed overture com
e editings by JD . SN
reorganized the typical perf. curves per JD and R
R D
ation and recom posed.
40W ( )

LM47660.1 THD+N8Ω “T”40W“TF” 30W
LM4766 (°Ke) (SPiKe™) (SOA) SPiKe
LM4766 / IC 2μV THD N 0.06 LM4766 TV
1kHz8Ω 30W×2 THDN 0.1 (max)
1kHz8Ω 30W×2 THDN 0.009 (typ)

SPiKe / 15TO-220 20V 78V
TV

Order Number LM4766T See NS Package Number TA15A
Isolated TO-220 Package Order Number LM4766TF
See NS Package Number TF15B
Plastic Package
Note B *
(Note 45)
(Note 45)
VCC 30VVEE 30VIMUTE 0.5mARL 8Ω TA 25°C
|VCC| |VEE| ( ) 78V |VCC| |VEE|
() 74V (VCCVEE)
|VCC| |VEE| 60V 60V (Note 6) 62.5W ESD (Note 7) 3000V (Note 8) 150
T θJC 1 /W TF θJC 2 /W
TTF 260 40 150
TMIN TA TMAX 20 TA 85
|VCC| |VEE| (Note 1) 20V 60V
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47 66 (Note 45) ()
VCC 30VVEE 30VIMUTE 0.5mARL 8Ω TA 25°C
Note 1: 60VSPiKe
Note 2: DC #1
Note 3: AC #2
Note 4: GND (510)
Note 5: DC AC Typ
Note 6: 25°C 150TθJC 1 /W
Note 7: 1.5kΩ 100pF
Note 9: Typ 25°C
Note 10:
Note 12: VOD“Clipping Voltage vs. Supply Voltage”
Note 13: (T)θJC 1 /W (TF)θJC 2 /W ± 26V 1 /W
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Note: *
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2 Ri RfAC
3 Rf RiAC
5 CS
6 RV (Note 14)
8 CIN (Note 14)
RSN fC 1/(2πRSNCSN)Figure 4
11 L (Note 14) R Q R Figure 4
12 R (Note 14)
13 RA Q1DC
15 RINP (Note 14)
16 RBI RBI /
17 RE Q1 DC CA 1/2
18 RM 6 110.5mA → RM RM (|VEE| 2.6V)/l I 0.5mA “Mute Attenuation vs Mute Current (per Amplifier)”
19 CM
20 S1
THD N vs Output Power THD N vs Output Power
THD N vs Distribution THD N vs Distribution
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Max Heatsink Thermal Resistance ( /W) at the Specified Ambient Temperature ( )
Note: θSAθCS = 0.2 /W
Safe Area SPiKe Protection
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Power Supply Rejection Ratio
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Mute Attenuation vs Mute Current (per Amplifier)
Mute Attenuation vs Mute Current (per Amplifier)
Output Power/Channel vs Supply Voltage
f 1kHz, RL 4Ω, 80kHz BW
Output Power/Channel vs Supply Voltage
f 1kHz, RL 6Ω, 80kHz BW
Output Power/Channel vs Supply Voltage
f 1kHz, RL 8Ω, 80kHz BW
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LM4766 0.5mA Figure 1 “Typical Audio Amplifier Application Circuit” RM 6 11VEE LM4766
6 11 “Mute Attenuation vs Mute Current” RM
RM (|VEE| 2.6V)/Ipin6
Ipin6 Ipin11 0.5mA
1mA 11mA 2mA


SPiKe



(1) VCC
PDMAXVCC 2/2π2RL (1)
LM4766 2 (1) 2“Power Dissipation vs. Output Power” (1)


( ) ( )θJCθCS θSA 3 LM4766T 1° C/W θJC ( ) Thermalloy Thermacode θCS ( ) 0.2°C/W ( ) LM4766
PDMAX (TJMAXTAMB)/θJA (2)
(1) °C/W θSA( ) (3) (3) (2)θSA
θSA [(TJMAXTAMB)PDMAX(θJC θCS)]/PDMAX (3)
θSA 25°C
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470μF

2 4
2 1 2 LM4766 4 LM4766 (1)4
PDMAX (3) θSA

/
LM4766 IC “”“” 1/2 1/2 1/2 1/2VCC / LM4766 /
LM4766 Figure 3 RINP2
Figure 3RBI 2N3904 1/2LM4766 RBI 2 10kΩ200kΩ

30W/8Ω
VOPEAK (4)IOPEAK (5)
: 30Wrms 8Ω 1Vrms (max) 47kΩ 20Hz 20kHz ± 0.25dB
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8Ω 30W VOPEAK 21.91V VOPEAKVOD25.4V ± 32V IOPEAK (5) 2.74A 8Ω 30W IOPEAK 2.74APK 25.48APK THDN θSA (6)
(6) AV 15.5
21 Rf 20kΩRi (7)
RiRf (AV 1) (7)
Ri 1kΩ 21 47kΩRIN 47kΩ 3dB 3dB5 0.17dB ± 0.25dB 4Hz 100kHz Ri Ci
Ci 1/(2π * 1kΩ * 4Hz) 39.8μF; 39μF
fHAV AV 21fH 100kHz (GBWP) 2.1MHz 8MHz LM4766 GBWP 20kHz 0.17dB
(4)
(5)
(6)
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Non-Isolated TO-220 15-Lead Package Order Number LM4766T
NS Package Number TA15A
4766
40W
(
)

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National Semiconductor Copyright © 2006 National Semiconductor Corporation www.national.com
inches (millimeters) ()
Isolated TO-220 15-Lead Package Order Number LM4766TF
NS Package Number TF15B