A driving circuit is provided. The driving circuit is configured to generate an output signal according to an input signal generated from an input-stage voltage with a first voltage level and a reference voltage with a second voltage level. The driving circuit has a differential amplifier and an output stage. The differential amplifier has a first input terminal coupled to the reference voltage, a second input terminal coupled to the output signal, and an output terminal. The differential amplifier is supplied by an operation voltage with a third voltage level. The output stage is configured to receive the input signal and the operation voltage to generate the output signal. The second input terminal is coupled to the output terminal of the differential amplifier according to the input signal. The operation voltage is generated according to the input signal and the input-stage voltage.