Patent ID: 8384655

Claim:
An LED driving circuit, comprising: a control logic circuit electrically coupled to an enable pin for receiving an input signal, the control logic circuit asserting an internal enable signal for activating the LED driving circuit in accordance with the input signal, when the input signal is identified as an enable signal; a PWM dimming circuit being in direct contact with the enable pin for receiving the input signal, the PWM dimming circuit outputting a control signal for controlling current flowing into at least one load connected to the LED driving circuit in accordance with the input signal, when the input signal is identified as a dimming signal; and a counter for identifying the input signal based on a clock signal, the counter asserting a detection signal for informing the control logic circuit of a de-assertion of the internal enable signal to de-activate the LED driving circuit when in response to identifying the input signal as an enable signal being de-asserted for a predetermined period of the clock signal.