Description

The FAN5341 is an asynchronous constant-current LED driver capable of efficiently delivering up to 500mW to a string of up to five LEDs in series. Optimized for small form factor applications, the 1.2MHz fixed switching frequency allows the use of small chip inductors and capacitors.

Features

■ Asynchronous Boost Converter

■ Internal Schottky Diode

■ Up to 500mW Output Power

■ Drives 3 to 5 LEDs in Series

■ 2.7V to 5.5V Input Voltage Range

■ Single-Wire Digital Control Interface to Set LED Brightness Levels

− 32 Linear Steps

■ 1.2MHz Fixed Switching Frequency

■ Soft-Start Capability

■ Input Under-Voltage Lockout (UVLO)

■ Output Over-Voltage Protection (OVP)

■ Short-Circuit Detection

■ Thermal Shutdown (TSD) Protection

■ Low Profile 6-lead 2.0 x 2.0 x 0.55mm UMLP Package

Applications

■ Cellular Mobile Handsets

■ Mobile Internet Devices

■ Portable Media Players

■ PDA, DSC, MP3 Players