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AW3643CSR Datasheet(PDF) 2 Page - Shanghai awinic technology co.,ltd

Part # AW3643CSR
Description  High Efficiency, Dual 1.5A Flash LED Driver
PDF  39 Pages
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Manufacturer  AWINIC [Shanghai awinic technology co.,ltd]
Direct Link  http://www.awinic.com.cn/index.php
Logo AWINIC - Shanghai awinic technology co.,ltd

AW3643CSR Datasheet(HTML) 2 Page - Shanghai awinic technology co.,ltd

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AW3643
Jan 2018 V1.4
www.awinic.com.cn
2
Copyright © 2016 SHANGHAI AWINIC TECHNOLOGY CO., LTD
PIN CONFIGURATION AND TOP MARK
GND
IN
SDA
SW
SCL
OUT
HWEN
TORCH
/TEMP
LED2
TX
LED1
D
A
C
B
3
1
2
STROBE
3643–AW3643CSR
XXXX–Manufacture Tracking Code
AW3643CSR Pin Configuration
(Top View)
AW3643CSR Top Mark
(Top View)
Fig 2
Pin Configuration and Top Mark
PIN DEFINITION
No.
NAME
TYPE
DESCRIPTION
A1
GND
Ground
Ground
A2
IN
Power
Input voltage connection. Connect IN to GND with a 10µF or larger ceramic
capacitor.
A3
SDA
I/O
Serial data input/output of the I2C interface.
B1
SW
Power
Switch pin of the step-up DC-DC convertor.
B2
STROBE
I/O
Active high hardware flash enable. Drive STROBE high to turn on Flash pulse.
Internal pull down
resistor of 300kΩ between STROBE and GND.
B3
SCL
I/O
Serial clock input of the I2C interface.
C1
OUT
Power
Step-up DC-DC converter output. Connect a 10µF ceramic capacitor between
OUT and GND.
C2
HWEN
I/O
Active high enable pin. High = Standby, Low = Shutdown/Reset. Internal pull
down resistor of 300kΩ between HWEN and GND.
C3
TORCH/TEMP
I/O
Torch terminal input or threshold detector for NTC temperature sensing and
current scale back.
D1
LED2
Power
High-side current source output for flash LED2.
D2
TX
I/O
Power amplifier synchronization input. Internal pull
down resistor of 300kΩ
between TX and GND.
D3
LED1
Power
High-side current source output for flash LED1.



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