LP39542

LP39542 Advanced Lighting Management Unit www.DataSheet4U.com August 2007 LP39542 Advanced Lighting Management Unit General Description LP39542 is an advanced lighting management unit for handheld devices. It drives any phone lights including display backlights, RGB, keypad and camera flash LEDs. The boost DC-DC converter drives high current loads with high efficiency. White LED backlight drivers are high efficiency low voltage structures with excellent matching and automatic fade in/ fade out function. The stand-alone command based RGB controller is feature rich and easy to configure. Built-in audio synchronization feature allows user to synchronize the color LEDs to audio input. Integrated high current driver can drive camera flash LED or motor/vibra. Internal ADC can be used for ambient light or temperature sensing. The flexible I2C interface allows easy control of LP39542. Small micro SMD package together with minimum number of external components is a best fit for handheld devices. Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Audio synchronization for color/RGB LEDs Command based PWM controlled RGB LED drivers Programmable ON/OFF blinking sequences for RGB LED High current driver for flash LED with built-in timing and safety feature. 4+2 or 6 low voltage constant current white LED drivers with programmable 8-bit adjustment (0...25 mA/LED) High efficiency Boost DC-DC converter I2C compatible interface Possibility for external PWM dimming control Possibility for clock synchronizatio...