Charge pump fields both camera lighting and flash

Sunnyvale, Calif – Advanced Analogic Technologies’ first multi-function charge pump IC, the AAT2801, simultaneously supports white LED backlight and camera flash functions for portable systems powered by lithium-ion/polymer batteries. The device, actually two charge pumps in one, uses one charge pump to drive up to four LEDs for backlighting, delivering up to 30 mA on each current source output. The second charge pump’s circuitry delivers a peak output of 300 mA for flash.