VIN 5 V

C1

4.7

F

m

D1

Rset

0.57 W

VIN

SW

FB

GND

CTRL

COMP

C2

1

F

m

350 mA

220 nF

TPS61165

L 1 : TOKO #A 915 _Y-100M

C1 : MurataGRM 188R61 A475 K

C2 : MurataGRM 188R61 E105K

D1 : ONsemiMBR0540T1

LED : OSRAMLW-W 5SM

ON/OFF

DIMMING

CONTROL

L1

10

H

m

TPS61165

www.ti.com

SLVS790A – NOVEMBER 2007 – REVISED MAY 2010

High Brightness White LED Driver in 2mm x 2mm

QFN and SOT-23 Packages

Check for Samples: TPS61165

The default white LED current is set with the external

1

FEATURES

sensor resistor Rset, and the feedback voltage is

2

•

3-V to 18-V Input Voltage Range

regulated

to

200mV,

as

shown

in

the

typical

•

38-V Open LED Protection for 10 LEDs

application. During the operation, the LED current can

be controlled using the 1 wire digital interface (

•

200-mV Reference Voltage With 2% Accuracy

Easyscale™

protocol)

through

the

CTRL

pin.

•

1.2-A Switch FET With 1.2-MHz Switching

Alternatively, a pulse width modulation (PWM) signal

Frequency

can be applied to the CTRL pin through which the

•

Flexible 1 Wire Digital and PWM Brightness

duty

cycle

determines

the

feedback

reference

Control

voltage.

In

either

digital

or

PWM

mode,

the

TPS61165 does not burst the LED current; therefore,

•

Built-in Soft Start

it does not generate audible noises on the output

•

Up to 90% Efficiency

capacitor.

For

maximum

protection,

the

device

•

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

features integrated open LED protection that disables

Thermal Pad, and SOT-23 Package

the TPS61165 to prevent the output from exceeding

the absolute maximum ratings during open LED

conditions.

APPLICATIONS

•

High Brightness LED Lighting

The TPS61165 is available in a space -saving 2mm x

•

White LED Backlighting for Media Form Factor

2mm OFN package with thermal pad, and SOT-23

Display

package

DESCRIPTION

With a 40-V rated integrated switch FET, the

TPS61165 is a boost converter that drives up to 10

LEDs in series. The boost converter runs at a

1.2-MHz fixed switching frequency with 1.2-A switch

current limit, and allows for the use of a high

brightness LED in general lighting.

Figure 1. Typical Application

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 © 2007–2010, 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.