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User's Guide
SNVA240A–June 2007–Revised April 2013
AN-1631 LP55281 Evaluation Kit
1 General Description
The LP55281 is a quad RGB LED driver for handheld devices. It can drive 4 RGB LED sets and a single
fun light LED. The boost DC-DC converter drives high current loads with high efficiency. The RGB driver
can drive individual color LEDs or RGB LEDs powered from boost output or external supply. Built-in audio
synchronization feature allows easy control of LP55281. Small DSBGA package or DSBGAxt package
together with minimum number of external components is a best fit for handheld devices. LP55281 has
also a LED test feature, which can be used for example in production for checking the LED connections.
Figure 1. LP55281 Evaluation Board with USB Interface Board
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SNVA240A–June 2007–Revised April 2013 AN-1631 LP55281 Evaluation Kit
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