White LED Driver - AWINIC
Description
AW9963
Jan 2019 V1.
3
White LED Driver with PWM Brightness control in Small Package
FEATURES
GENERAL DESCRIPTION
l
2.
7 to 5.
5V Input Voltage Range 38V OVP, 1MHz Switching Frequency Content Adaptive Backlight Control (CABC) Adaptive Boost Output to WLED Voltages
tia The AW9963 is dual-channel WLED driver which
provides highly integrated solutions for single-cell Li-ion battery powered smartphone backlight.
The AW9963 built-in a 2A/40V power MOSFET which can drive up to 2p10s WLED diodes with Li-
1% Typical Current Matching and Accuracy Supports Low to 0.
1% Stable PWM Dimming Up to 9-Bit Dimming Resolution Up to 90% Efficiency PFM Mode at Light Load Built-in WLED Open/Short Protection Over-current and Over-temperature Protection
n ion battery power supply.
It also integrates two high
accuracy and matching current sink regulators which can significantly improve uniformity of backlight, very low feedback voltage and PFM
e mode at light load bring AW9963 higher efficiency.
The AW9963 supports 10kHz to 100kHz PWM input
d range, can provide low to 0.
1% stable current.
i The AW9963 integrates built-in soft start, as well as f overvoltage, overcurrent, and thermal shutdown
Built-in Soft-start Limits Inrush Current
nprotections.
WLCSP-1.
36mm x 1.
36mm-9B Package
o
APPLICATION
C
ic Smart Phones
PDAs, Handheld Computers GPS Receivers
in Backlight for Small and Media Form-Factor LCD
Display with Single-Cell Battery Input
aw
www.
awinic.
com.
cn
1
Copyright © 2017 SHANGHAI AWINIC TECHNOLOGY CO.
, LTD
AW9963
Jan 2019 V1.
3
TYPICAL APPLICATION CIRCUIT
2.
7V~5.
5V VBAT
R2
C1
10Ω
1mF
C3 1mF
Enable/ Disable
PWM Dimming
C4 330nF
L1
10mH
D1
SW
C2
1mF
l
VIN
tia
EN
n
AW9963
e
PWM
fid IFB1
COMP
nIFB2
o
ISET
R1 63.
4kΩ
CGND
ic All the trademarks mentioned in the document are the property of their owners.
in
aw
www.
awinic.
com.
cn
2
Copyright © 2017 SHANGHAI AWINIC TECHNOLOGY CO.
, LTD
ORDERING INFORMATION
AW9963...
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