TPS61163
www.ti.com
SLVSBQ2C –JANUARY 2013–REVISED AUGUST 2013
Dual-Channel WLED Drivers For Smart Phone
Check for Samples: TPS61163
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FEATURES
DESCRIPTION
The TPS61163 is a dual-channel WLED driver which
provide highly integrated solutions for single-cell Li-
ion battery powered smartphone backlight. The
device has a built-in high efficiency boost regulator
with integrated 1.5A/40V power MOSFET and
support as low as 2.7V input voltage. With two high
current-matching capability current sink regulators,
the devices can drive up to 10s2p WLED diodes. The
boost output can automatically adjust to the WLED
forward voltage and allow very low voltage headroom
control, thus to improve LED strings efficiency
effectively.
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2.7V to 6.5V Input Voltage
Integrated 1.5A/40V MOSFET
1.2MHz Switching Frequency
Dual Current Sinks of up to 30mA Current
Each
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1% Typical Current Matching and Accuracy
37.5V OVP Threshold
Adaptive Boost Output to WLED Voltages
Very Low Voltage Headroom Control (90mV)
Flexible Digital and PWM Brightness Control
1-Wire Control Interface (EasyScale)
PWM Dimming Control Interface
Up to 100:1 PWM Dimming Ratio
Up to 10-bit Dimming Resolution
Up to 90% Efficiency
The TPS61163 supports both of the PWM dimming
interface and 1-wire digital EasyScale™ dimming
interface and can realize 9-bit brightness code
programming.
The TPS61163 integrates built-in soft start, over
voltage/current protection, and thermal shut down
protections.
Built-in Soft Start
The device is available in a space-saving 1.31 mm x
1.31 mm CSP package.
Over Voltage Protection
Built-in WLED Open/Short Protection
Thermal Shutdown
TYPICAL APPLICATION
L1
Support 4.7uH Inductor Application
9L 1.31 mm x 1.31 mm CSP Package
4.7µH
2.7V ~ 6.5V
VBAT
D1
R2
10Ω
C1
1µF
C2
1µF
SW
APPLICATIONS
VIN
EN
C3
1µF
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Smart Phones
PDAs, Handheld Computers
GPS Receivers
Enable /
Disable
TPS61163
Backlight for Small and Media Form Factor
LCD Display with Single-Cell Battery Input
PWM
Dimming
PWM
IFB1
COMP
IFB2
ISET
C4
330nF
R1
63.4kΩ
GND
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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EasyScale is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated