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AW3642 Datasheet Preview

AW3642 Datasheet

1.5A Flash LED Driver

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AW3642
Oct 2018 V1.4
High Efficiency, 1.5A Flash LED Driver
FEATURES
GENERAL DESCRIPTION
1.5A Accurate and Programmable LED Current
Source
The AW3642 is a LED flash driver that provides a
Flash:23.4mA~1.5A64 levels
23.44mA/level
high level of adjustability within a small solution
size. The AW3642 utilizes a 2MHz or 4MHz
fixed-frequency synchronous boost converter to
l
Torch:5.4mA~376mA64 levels
5.88mA/level
Flash Timeout40ms~1.6s16 levels
Flash/Torch/IR Mode
High Efficiency: 85%
tia provide power to the 1.5A constant current LED
sources. The 64 levels current source provides the
flexibility to adjust the current of LED in
Flash/Torch/IR modes. The AW3642 provides
three IVFM protection modes to prevent system
reset or shutdown under low battery condition.
Optimized Flash LED Current During Low Battery
Conditions (IVFM)
n The AW3642 is controlled via an I2C-compatible
interface. The main features of the AW3642
Hardware Strobe Enable (STROBE)
Synchronization Input for RF Power Amplifier
Pulse Events (TX)
400kHz I2C:AW3642I2C Address=0x63
0.5mm Pitch, CSP-9 Package
APPLICATION
include: flash/torch current, flash timeout duration,
IVFM, TX interrupt. The AW3642 also provides
e hardware flash pins (STROBE) to control flash
events.
d The 2MHz or 4MHz switching frequency options,
i overvoltage protection (OVP), and adjustable
f current limit allow for the use of tiny, low-profile
Smartphone Camera Flash
ninductors and 10-µF ceramic capacitors. The
device operates over a 40°C to +85°C ambient
temperature range.
oThe AW3642 is available in small 0.5mm pitch
1.630mm×1.330mm CSP-9 package.
C TYPICAL APPLICATION CIRCUIT
L 1μH 3A
ic VIN
CIN
10μF
10V
in
IN
SW
OUT
AW3642CSR
COUT
10μF
10V
aw
MCU
STROBE
TX
SDA
SCL
GND
LED
Flash
D1
LED
Fig 1 Typical Application Circuit of AW3642
All trademarks are the property of their respective owners.
www.awinic.com.cn
1
Copyright © 2017 SHANGHAI AWINIC TECHNOLOGY CO., LTD




AWINIC

AW3642 Datasheet Preview

AW3642 Datasheet

1.5A Flash LED Driver

No Preview Available !

PIN CONFIGURATION AND TOP MARK
AW3642
Oct 2018 V1.4
AW3642CSR Pin Configuration
(Top View)
AW3642CSR Top Mark
(Top View)
l
A
OUT
SW
GND
B
LED
STROBE
IN
3642
XXXX
tia
n
C
TX
SDA
SCL
e
1
PIN DEFINITION
2
Fig 2
3
3642AW3642CSR
d XXXXManufacture Tracking Code
nfi Pin Configuration and Top Mark
No.
NAME TYPE
o
DESCRIPTION
A1
A2
OUT
SW
Power
Power
C Step-up DC-DC converter output. Connect a 10µF ceramic capacitor between
OUT and GND.
Switch pin of the step-up DC-DC convertor.
A3
B1
B2
GND
LED
STROBE
ic Ground
Power
I/O
Ground
High-side current source output for flash LED.
Active high hardware flash enable. Drive STROBE high to turn on Flash pulse.
Internal pull down resistor of 300kΩ between STROBE and GND.
B3
C1
in IN
Power
TX
I/O
Input voltage connection. Connect IN to GND with a 10µF or larger ceramic
capacitor.
Power amplifier synchronization input. Internal pull down resistor of 300kΩ
between TX and GND.
w C2
SDA
C3
SCL
a
I/O Serial data input/output of the I2C interface.
I/O Serial clock input of the I2C interface.
www.awinic.com.cn
2
Copyright © 2017 SHANGHAI AWINIC TECHNOLOGY CO., LTD


Part Number AW3642
Description 1.5A Flash LED Driver
Maker AWINIC
PDF Download

AW3642 Datasheet PDF






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