GENERAL DESCRIPTION
The ADM8845 uses charge pump technology to provide the power required to drive up to six LEDs. The LEDs are used for backlighting a color LCD display, having regulated constant current for uniform brightness intensity. The main display can have up to four LEDs, and the sub display can have one or two LEDs. The digital CTRL1 and CTRL2 input control pins control the shutdown operation and the brightness of the main and sub displays.

FEATURES
    Drives 6 LEDs from 2.6 V to 5.5 V (Li-Ion) input supply
    1×/1.5×/2× fractional charge pump to maximize power efficiency
    1% maximum LED current matching
    Up to 88% power efficiency over Li-Ion range
    Powers main and sub display LEDs with individual shutdown
    Package footprint only 9 mm2 (3 mm × 3 mm)
    Package height only 0.75 mm
    Low power shutdown mode
    Shutdown function
    Soft-start limiting in-rush current

APPLICATIONS
    Cellular phones with main and sub displays
    White LED backlighting
    Camera flash/strobes and movie lights
    Micro TFT color displays
    DSC
    PDAs