LP5523 - Texas Instruments

LP5523 9-channel LED driver

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 b.

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
• Sour.