GENERAL DESCRIPTION

The ADD5205is a white LED driver for backlight applications based on high efficiency, current mode, step-up converter technology. It is designed with a 0.3 Ω internal switch and 1 MHz fixed operating frequency. The ADD5205contains four regulated constant current sources for uniform brightness intensity. Each current source is capable of driving up to 25 mA.

FEATURES

White LED driver based on inductive boost converter

Input voltage range: 2.8 V to 18 V

Internal compensation

1 MHz fixed operating frequency

28 V fixed overvoltage protection

Built-in soft start for boost converter

Drives up to 4 LED current sources

LED current adjustable up to 25 mA for each channel

DC current level brightness control with PWM input

LED open fault protection

General

Thermal shutdown

Undervoltage lockout

12-lead, 3 mm × 3 mm × 0.75 mm LFCSP package

APPLICATIONS

Smart PCs, PMPs, tablet PCs, UMPCs, and notebooks