Patent ID: 8598803

Claim:
A driving circuit adapted to drive at least one light emitting diode (LED) unit, the LED unit comprising at least one LED, the driving circuit comprising: a driving unit, having a first output terminal for outputting a driving power to the LED unit; a feedback unit, for generating at least one first feedback signal in accordance with a current conducted in the LED unit; and a current pre-charging unit having a first input terminal coupled to the first output terminal of the driving unit, providing a current path to the driving power and generating a second feedback signal in accordance with the driving power; wherein an enable signal is used to determine whether to conduct the driving power to the LED unit, wherein when the enable signal is at a first logic level, the driving power is conducted to the LED unit, and one of the at least one first feedback signal is selected and conducted to the driving unit for adjusting the driving power; and when the enable signal is at a second logic level, the second feedback signal is selected and conducted to the driving unit for adjusting the driving power, and the driving power is not conducted to the LED unit.