LP5523
Features
- 1 Three Independent Program Execution Engines, Nine Programmable Outputs with 25.5-m A 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 and Overcurrent and
Short-Circuit Protection
- Built-in LED Test
- 200-n A Typical Standby Current
- Automatic Power-Save Mode
IVDD = 10 µA (Typical)
- Two-Wire I2C-patible 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...
