Patent ID: 8810219
Filing Date: 2014-08-19
Classification: G05F

Abstract:
1. A voltage regulator comprising: a differential amplifier circuit which receives an input of a reference voltage output from a reference voltage circuit and an input of a feedback voltage obtained by dividing an output voltage of the voltage regulator and then amplifies and outputs a difference between the reference voltage and the feedback voltage; a first MOS transistor having a gate terminal connected to an output terminal of the differential amplifier circuit; a first constant current source which is provided between the first MOS transistor and a ground terminal; an output MOS transistor having a gate terminal connected to a drain terminal of the first MOS transistor via a phase compensation circuit; a second MOS transistor having a gate terminal to which an output of the differential amplifier circuit is input and a drain terminal connected to the gate terminal of the output MOS transistor; and a second constant current source provided between the drain terminal of the second MOS transistor and a ground terminal.