The LP8501 is an LED driver with 9 outputs, designed to produce versatile lighting
effects for mobile devices. The device is equipped with an internal program memory, which allows
operation without processor control. Internal program memory is used by three independent program
execution engines to produce user-defined lighting effects for the outputs.
A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range.
The excellent efficiency over a wide operating range is achieved by autonomously selecting the best
charge pump gain based on LED forward voltage requirements. The LP8501 is able to automatically
enter power-save mode when LED outputs are not active, thus lowering idle current consumption down
to 10 µA (typ.)
The device has a flexible General Purpose Output (GPO) (which can be used, for example,
as a digital control pin for other devices), an INT pin (interrupt function), which can be used to
notify the processor, and a Trigger input interface, which allows program execution start without
The device requires only four small and low-cost ceramic capacitors. The LP8501 is
available in a tiny 25-bump 2.26 mm x 2.26 mm x 0.60 mm DSBGA package (0.4 mm pitch).
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