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Characteristics Applications
2021 HOLTEK New Product Presentation
Block Diagram
Proximity Sensing Can Lid BS45F3336
C04
Trash cans, soup dispensers, water taps, etc.■ Constant current to drive IR LEDs directly
■ Dedicated sensing AFE, reduced external component count
■ Touch keys for product designs
■ H-Bridge to directly drive DC motors or solenoid valves
■ Sensing distance up to 40cm
■ Average current consumption lower than 40μA
IR LED RXIR LED TX
6.0V
HT7533
VVi Vo
BS45F3336
Indicator
DC Motor
Touch Keys
1
1
2
2
3
3
4
4
5
5
6
6
D D
C C
B B
A A
GND
GND
R41k
C20.1uf
C30.1uf
C410uf
1
VOUT3
VIN2
U2
HT7133
C50.1uf
C60.1uf
C847uf
T_LED
R_LED
R6200K
R5200K
C11
150pf
GND
R3
1k
C70.1uf
Vibration
GND
LED1
R1
330R
M1motor
C120.1uf
C1310pf
GND
R90.47R
VDD
TOUCH_KEY
VDD
C10100uf
VBAT
PGND
VBAT
C90.1uf
PGND
R7
1k
PGND
C140.1uf
PGND
VBAT
VDD
PA2/OPDAN/[VBAT]/ICPCK/OCDSCL23
PA1/OPDAO/AN1/[CTP]24
PA3/OPDAP22
PA5/CTCK21
PA6/[OPDAP]/AN2/CTPB 20
PA0/INT/AN0/[CTP]/ICPDA/OCDSDA 19
OUT1 18
PGND 17
OUT2 14
VM 13
HBVDD12
HBVSS11
PA7/AN310
VDD/AVDD9
VSS8
AVSS7
ISINK06
ISINK15
PA4/VBAT 4
PB2/KEY1/VREF2
PB4/CTP 1
PB3/KEY23
NC15
NC16
BS45F3336
R8620K
R10330K
PGND
C150.1uf
PGND
C110uf
R2
0R
PGND
GND
VBAT