Li-ion Battery Charger
Description
HT4902T
HT4902T
IC+MCU+ IC
LED
4 500mA MOSFET
0V / /
4KV ESD
MOSFET
500KHZ 5uA
LED
USB_IN 20uA
BTP<3.2V L1
BTP<3V
1
HT4902T
:
1 LED 2 EXT_CH 3 L1 4 L2 5 L3 6 L4 7 KEY 8 CE 9 GND 10 STB 11 FB 12 GND 13 EXT 14 LX 15 BTP 16 VDD
1 2 3 4 //
BOOST BOOST
5V
2
HT4902T
USB_IN
VCC
1 2 3 4
DD+ GND
D1
C1 10uF
LED1 LED2 LED3 LED4
LED5
Q1 8550/SO...
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