LP3952 Datasheet | National Semiconductor

Description LP3952 is a color LED driver for battery powered handheld devices. It drives any color LEDs including RGB LEDs, indicator LEDs and keypad backlight LEDs. The boost DC-DC converter drives high current loads with high efficiency. The stand-alone mand based RGB controller is feature rich and easy to configure. Different lighting patterns and blinking sequences can be programmed to driver registers. Built-in audio synchronization feature allows user to synchronize the color LEDs to audio signal. LED lighting can be controlled either by audio signal amplitude or frequency. There are many controls available for audio synchronization to get desired lighting effect, including gain, speed, and different filter settings. The flexible I2C interface allows easy control of LP3952. LED outputs can be also controlled with external PWM signal. Small micro SMDxt package together with minimum number of external ponents is a best fit for handheld devices. Features - Constant current and PWM controlled color LED drivers - Maximum current 40m A / output in constant current mode, - - - - - - - supports also switch mode control with 50 m A maximum current / output plete audio synchronization for color/RGB LEDs with amplitude, frequency and speed optimization mand based lighting pattern generator for RGB LEDs Programmable ON/OFF blinking sequences for RGB1 outputs High efficiency Boost DC-DC converter with programmable VOUTand f SW I2C patible interface Possibility for external PWM dimming control Small package - 36-bump micro SMDxt, 3.0 x 3.0 x 0.65 mm Applications - Cellular Phones - PDAs, MP3 players Typical Applications © 2007 National Semiconductor Corporation .national. Connection Diagrams and Package Mark Information CONNECTION DIAGRAMS .. 36-bump Micro SMDxt Package, 3.0 x 3.0 x 0.65 mm, 0.5 mm pitch NS Package Number RLA36AAA PACKAGE MARK Ordering Information Order Number LP3952RL LP3952RLX Package Marking...