TPS61162A/3A

SW

VIN

PWM

ISET

L1

4.7µH

IFB1

IFB2

C1

1µF

C2

1µF

PWM

Dimming

R1

63.4k

VBAT

2.7V ~ 6.5V

GND

COMP

EN

Enable /

Disable

C4

330nF

C3

1µF

R2

10

D1

TPS61162A

TPS61163A

www.ti.com

SLVSC26 – NOVEMBER 2013

Dual-Channel WLED Drivers for Smart Phone

Check for Samples: TPS61162A, TPS61163A

1

FEATURES

DESCRIPTION

The TPS61162A and TPS61163A are dual-channel

2

•

2.7V to 6.5V Input Voltage

WLED

drivers

which

provide

highly

integrated

•

Integrated 1.5A/40V MOSFET

solutions for single-cell Li-ion battery powered smart

•

1.2MHz Switching Frequency

phone backlight. The devices have a built-in high

efficiency boost regulator with integrated 1.5A/40V

•

Dual Current Sinks of up to 30mA Current

power MOSFET and support as low as 2.7V input

Each

voltage. With two high current-matching capability

•

1% Typical Current Matching and Accuracy

current sink regulators, the devices can drive up to

•

Optional 26.5V / 37.5V OVP Threshold

10s2p

WLED

diodes.

The

boost

output

can

automatically adjust to the WLED forward voltage and

–

TPS61162A – 26.5V OVP

allow very low voltage headroom control, thus to

–

TPS61163A – 37.5V OVP

improve LED strings efficiency effectively.

•

Adaptive Boost Output to WLED Voltages

The TPS61162A and TPS61163A support both of the

•

Very Low Voltage Headroom Control (90mV)

PWM

dimming

interface

and

1-wire

digital

•

Flexible Digital and PWM Brightness Control

EasyScale™ dimming interface and can realize 9-bit

brightness code programming.

•

1-Wire Control Interface (EasyScale)

•

PWM Dimming Control Interface

The TPS61162A and TPS61163A integrate built-in

soft start, over voltage/current protection, and thermal

•

Up to 100:1 PWM Dimming Ratio

shut down protections.

•

Up to 9-bit Dimming Resolution

The devices are available in a space-saving 1.31 mm

•

Up to 90% Efficiency

x 1.31 mm CSP package.

•

Built-in Soft Start

•

PFM Mode at Light Load

TYPICAL APPLICATION

•

Over Voltage Protection

•

Built-in WLED Open/Short Protection

•

Thermal Shutdown

•

Support 4.7uH Inductor Application

•

9L 1.31 mm x 1.31 mm CSP Package

APPLICATIONS

•

Smart Phones

•

PDAs, Handheld Computers

•

GPS Receivers

•

Backlight for Small and Media Form Factor

LCD Display with Single-Cell Battery Input

1

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.

2

EasyScale is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.