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