The present invention proposes a voltage-regulator and a power supply having a current-sharing circuit. The voltage-regulator capable of current sharing uses an enabling terminal as a current-sharing control interface. A pass transistor supplies an output voltage and an output current to an output terminal of the voltage-regulator. A feedback control circuit generates a control signal to control the pass transistor in response to a reference voltage. A current-sharing unit is coupled to the enabling terminal and the feedback control circuit for generating a bus signal in response to the current-sense signal and the reference voltage and generating the reference signal in response to the reference voltage, the bus signal and the current-sense signal.