LP3954

LP3954 Advanced Lighting Management Unit www.DataSheet4U.com July 2007 LP3954 Advanced Lighting Management Unit General Description LP3954 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 new 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 SPI/I2C interface allows easy control of LP3954. 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 High current driver for flash LED with built-in timing. 4+2 or 6 low voltage constant current white LED drivers with programmable 8-bit adjustment (0…25mA/LED) High efficiency Boost DC-DC converter SPI / I2C compatible interface Possibility for external PWM dimming control Possibility for clock synchronization for RGB timing Ambient light and temperature sensing possibility ...