1 Features

1• Input Voltage Range: 2.7 V to 18 V

• 26-V Open LED Protection for TPS61160A

38-V Open LED Protection for TPS61161A

• 200mV Reference Voltage With ±2% Accuracy

• PWM Interface for Brightness Control

• Built-in Soft Start

• Up to 90% Efficiency

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

With Thermal Pad

2 Applications

• Cellular Phones

• Portable Media Players

• Ultra Mobile Devices

• GPS Receivers

• White LED Backlighting for Media Form Factor

Display

3 Description

With a 40-V rated integrated switch FET, the

TPS61160A/61A is a boost converter that drives

LEDs in series. The boost converter runs at 600-kHz

fixed switching frequency to reduce output ripple,

improve conversion efficiency, and allows for the use

of small external components.

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 the typical

application. During the operation, the LED current can

be controlled by a pulse width modulation (PWM)

signal applied to the CTRL pin through which the duty

cycle determines the feedback reference voltage. In

PWM dimming mode, the TPS61160A/61A 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 TPS61160A/61A to

prevent the output from exceeding the absolute

maximum ratings during open LED conditions.

The TPS61160A/61A is available in a space-saving,

2-mm × 2-mm WSON package with thermal pad.