LP5523

Product Folder Order Now Technical Documents Tools & Software Support & Community LP5523 SNVS550E – SEPTEMBER 2009 – REVISED JANUARY 2017 LP5523 Nine-Channel RGB- and White-LED Driver With Internal Program Memory and Integrated Charge Pump – DSBGA Package 1 Features 1 Three Independent Program Execution Engines, Nine Programmable Outputs with 25.5-mA FullScale 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 and 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 3 Description The LP5523 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 maintains excellent efficiency over a wide operating range by autonomously selecting the best charge-pump gain based on LED forward vol...