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SM8133B White LED Driver IC
OVERVIEW
The SM8133B is a charge pump type white LED driver.
It can drive 1 to 6 backlight white LED connected in parallel and 1 flash white LED.
The output voltage circuit has a 3.
0V LDO (Low Dropout
Regulator), making the device ideal for camera-equipped cellular phones.
The charge pump switches between ×1 to ×1.
5 boost mode in response to LED drive current requirements to extend battery life to the maximum.
The boost switching occurs in response to the drive current of all the connected LED and thus supports variations in LED forward-bias voltage drop (VF).
Each LED drive current is controlled by a 7-channel LED drive current control circui...