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AW2027 Datasheet Preview

AW2027 Datasheet

3-Channel LED Driver

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AW2027
Nov 2017 V1.2
3-Channel LED Drivers with Auto Charging Indicator
FEATURES
GENERAL DESCRIPTION
l
3-channel constant current LED drivers
4-level IMAX selections: 5/10/15/30mA
16-level current setting for each LED4096
mixed-color available
256-level exponential PWM dimming
tia AW2027 is a three-channel constant current LED
driver with auto charging indication function. The
maximum output current is 4-level selectable
(5mA/ 10mA/15mA/30mA). The driving current of
each LED has 16 levels configurable so as to
Automatic breathing light
Three independent pattern controllers
n Individual and sync control selectable
Support charging indication under low battery
voltage condition
e Directly start up blinking on LED1 via pulling
pin CHRG up to high
d Blink period 2s, max output current 6mA
i LED current accuracy: ±3%
LED matching accuracy: ±3%
f Low dropout voltage: 50mV
400kHz I2C interface (address: 0x64)
n Shutdown control by pulling down pin SCL
UVLO and OTP protection
o Single power supply, 2.5V~5.5V
achieve 4096 color mixing. The 256-level
exponential PWM creates fine and smooth
dimming effect even in low brightness.
AW2027 can provide auto charging indication
under the condition of low battery voltage. When
the voltage of battery is too low, and the I2C
interface halts, the internal pattern controller will be
activated by pulling pin CHRG to high, and pin
LED1 will output blinking lighting with period of 2s
and max 6mA current.
AW2027 contains three independent pattern
controllers. Three LEDs can be controlled to work
synchronously or individually according to different
applications.
C 1.5mm×1.5mm×0.45mm DFN-8L package
AW2027 is available in a 1.5mm×1.5mm×0.45mm
DFN-8L package.
TYPICAL APPLICATION CIRCUIT
ic VIO
VBAT
MCU
n SCL
i SDA
4.7kΩ
x2
1mF
VBAT
GND
LED1
wVBAT
Charger
10kΩ
SCL
SDA
LED2
LED3
aST
NMO S
CHRG
PMOS
AW2027
Charging Status Indication Application
VIO
VBAT
MCU
SCL
SDA
VBUS
4.7kΩ
x2
1mF
30kΩ
VBAT
GND
SCL
SDA
CHRG
LED1
LED2
LED3
AW2027
Adapter Plug-in Indication Application
All the trademarks mentioned in the document are the property of their owners.
www.awinic.com.cn
1
Copyright © 2017 SHANGHAI AWINIC TECHNOLOGY CO., LTD




Awinic

AW2027 Datasheet Preview

AW2027 Datasheet

3-Channel LED Driver

No Preview Available !

AW2027
Nov 2017 V1.2
PIN CONFIGURATION AND TOP MARK
AW2027 TOP VIEW
AW2027 MARKING
GND SDA
8
7
SCL VBAT
6
5
l
9
Exposed
Pad
A27
XXX
tia
1
2
3
4
n
CHRG LED3 LED2 LED1
PIN DEFINITION
A27 ---- AW2027
fide XXX ---- Manufacture date code
No.
1
NAME
CHRG
nDESCRIPTION
Charge indicator input, active high.
2
3
LED3
LED2
o LED3 cathode driver, anode connected to VBAT
LED2 cathode driver, anode connected to VBAT
4
5
LED1
VBAT
C LED1 cathode driver, anode connected to VBAT
Power supply (2.5V~ 5.5V)
6
SCL
Serial clock Input for I2C Interface
7
8
9
ic SDA
GND
Exposed
Serial data I/O for I2C Interface
Ground
Exposed Pad must be soldered to the PCB board and connected to
inPad
GND.
aw
www.awinic.com.cn
2
Copyright © 2017 SHANGHAI AWINIC TECHNOLOGY CO., LTD


Part Number AW2027
Description 3-Channel LED Driver
Maker Awinic
PDF Download

AW2027 Datasheet PDF






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