C1

D1

VIN

SW

FB

GND

CTRL

COMP

C2

20 mA

TPS61161

ON/OFF

DIMMING

CONTROL

38 V Max

L1

22

H

m

1

F

m

C3

220 nF

R

10

set

W

1

F

m

L1: TDK VLCF5020T-220MR75-1

C1: Murata GRM188R61E105K

C2: Murata GRM21BR71H105K

D1: ONsemi MBR0540T1

V 3 V to 18 V

I

TPS61160

TPS61161

www.ti.com

SLVS791C – NOVEMBER 2007 – REVISED APRIL 2012

White LED Driver With Digital and PWM Brightness Control in 2mm x 2mm

QFN Package

Check for Samples: TPS61160, TPS61161

1

FEATURES

DESCRIPTION

With a 40-V rated integrated switch FET, the

2

•

2.7V to 18V Input Voltage Range

TPS61160/1 is a boost converter that drives LEDs in

•

26V Open LED Protection (TPS61160)

series. The boost converter runs at 600kHz fixed

38V Open LED Protection (TPS61161)

switching frequency to reduce output ripple, improve

conversion efficiency, and allows for the use of small

•

200mV Reference Voltage With ±2% Accuracy

external components.

•

Flexible Digital and PWM Brightness Control

The default white LED current is set with the external

•

Built-in Soft Start

sensor resistor Rset, and the feedback voltage is

•

Up to 90% Efficiency

regulated

to

200mV,

as

shown

in

the

typical

•

2mm × 2mm × 0.8mm 6-pin QFN Package With

application. During the operation, the LED current can

Thermal Pad

be

controlled

using

the

1-wire

digital

interface

( Easyscale™ protocol) through the CTRL pin.

Alternatively, a pulse width modulation (PWM) signal

APPLICATIONS

can be applied to the CTRL pin through which the

•

Cellular Phones

duty

cycle

determines

the

feedback

reference

•

Portable Media Players

voltage.

In

either

digital

or

PWM

mode,

the

TPS61160/1

does

not

burst

the

LED

current;

•

Ultra Mobile Devices

therefore, it does not generate audible noises on the

•

GPS Receivers

output capacitor. For maximum protection, the device

•

White LED Backlighting for Media Form Factor

features integrated open LED protection that disables

Display

the TPS61160/1 to prevent the output voltage from

exceeding the IC's absolute maximum voltage ratings

during open LED conditions.

The TPS61160/1 is available in a space-saving,

2mm × 2mm QFN package with thermal pad.

Figure 1. Typical Application of TPS61161

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 © 2007–2012, 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.