LP55231 Datasheet (Texas Instruments)

LP55231, 9-channel LED driver

The LP55231 is a 9-channel LED driver designed to produce lighting effects for mobile devices.

A highefficiency charge pump enables LED driving over full Li-Ion battery voltage range.

The device is equipped with an internal program memory, which allows operation without processor control.

The LP5523

LP55231 Features

* 1 Three Independent Program Execution Engines, 9 Programmable Outputs With 25.5-mA Full-Scale Current, 8-Bit Current Setting Resolution and 12-Bit PWM Control Resolution

* Adaptive High-Efficiency 1×/1.5× Fractional Charge Pump - Efficiency up to 94%

* LED Drive Efficiency U