Abstract: An integrated circuit (IC) is provided. The IC includes an intellectual property (IP) module, and a dynamic voltage scaling regulator capable of providing an output signal to the IP module. The dynamic voltage scaling regulator includes an on-die low drop out (LDO) regulator, a current sensor coupled to the on-die LDO regulator and the IP module, and a control unit coupled to the current sensor and the on-die LDO regulator. The LDO regulator generates the output signal according to a control signal. The current sensor provides a sensing signal according to a current of the output signal. The control unit provides the control signal to the on-die LDO regulator according to the sensing signal. In response to a variation of the current of the output signal, the on-die LDO regulator adjusts a voltage value of the output signal according to the control signal.