REGULATOR CIRCUIT AND SEMICONDUCTOR DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To supply a stable output voltage even when an offset start occurs.SOLUTION: A regulator circuit according to an embodiment includes: a voltage divider that outputs a feedback voltage obtained by dividing an output voltage; an error amplifier that amplifies a difference between the feedback voltage and a reference voltage and outputs an error signal; an output driver section that includes a first output transistor which is driven according to the error signal and a second output transistor which is driven according to the error signal together with the first output transistor in response to an externally input mode selection signal; and a clamp circuit that clamps a gate of the second output transistor to a low level in response to the mode selection signal.