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 : Murata GRM 188R61 A475 K

C2 : Murata GRM 188R61 E105K

D1 : ONsemi MBR0540T1

LED : OSRAM LW-W 5SM

ON/OFF

DIMMING

CONTROL

L1

10

H

m

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Design

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TPS61165

SLVS790D – NOVEMBER 2007 – REVISED APRIL 2016

TPS61165 High-Brightness, White LED Driver in WSON and SOT-23 Packages

1

1 Features

1

•

3-V to 18-V Input Voltage Range

•

38-V Open LED Protection

•

200-mV Reference Voltage With 2% Accuracy

•

1.2-A Switch FET With 1.2-MHz Switching

Frequency

•

Flexible One-Wire Digital and PWM Brightness

Control

•

Built-in Soft Start

•

Up to 90% Efficiency

•

2-mm × 2-mm × 0.8-mm 6-Pin WSON Package

With Thermal Pad, and SOT-23 Package

2 Applications

•

High-Brightness LED Lighting

•

White LED Backlighting for Media Form Factor

Display

•

Handheld Data Terminals (EPOS)

•

Thermostat Display

•

Human Machine Interface (HMI)

•

Video Surveillance Camera

•

Exit Signs

•

HMI and Control Panels

•

Industrial PCs

•

IR LED driver

•

Refrigerator

•

Ovens

3 Description

With a 40-V rated integrated switch FET, the

TPS61165 device is a boost converter that drives

LEDs in series. The boost converter runs at a

1.2-MHz fixed switching frequency with 1.2-A switch

current limit, allowing the use of a high-brightness

LED in general lighting.

The default white LED current is set with the external

sensor resistor Rset, and the feedback voltage is

regulated to 200 mV, as shown in Typical Application.

During the operation, the LED current can be

controlled

using

the

one-wire

digital

interface

(EasyScale™

protocol)

through

the

CTRL

pin.

Alternatively, a pulse-width-modulation (PWM) signal

can be applied to the CTRL pin through which the

duty

cycle

determines

the

feedback

reference

voltage.

In

either

digital

or

PWM

mode,

the

TPS61165 device does not burst the LED current;

therefore, it does not generate audible noises on the

output capacitor. For maximum protection, the device

features integrated open-LED protection that disables

the TPS61165 device to prevent the output from

exceeding its absolute maximum voltage ratings

during open LED conditions.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS61165

SOT-23 (6)

2.90 mm × 1.60 mm

WSON (6)

2.00 mm × 2.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application