LP55231

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design LP55231 SNOSCR5D – MARCH 2013 – REVISED DECEMBER 2016 LP55231 Nine-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump - WQFN 1 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 Up to 93% Charge Pump With Soft Start Overcurrent and Short-Circuit Protection Built-in LED Test 200-nA Typical Standby Current Automatic Power Save Mode; IVDD = 10 µA (Typical) Two-Wire I2C-Compatible Control Interface Flexible Instruction Set Large SRAM Program Memory Small Application Circuit Source (High-Side) Drivers Architecture Supports Color Control 2 Applications Fun Lights and Indicator Lights LED Backlighting Haptic Feedback Programmable Current Source Fire Notification Electronic Thermostats Electronic Locks Robotics Intruder Notification Light Switches and Dimmers Gaming and Smart Headphones Speakers 3 Description 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 wit...