| 摘要 |
A regulator circuit for generating a regulation voltage obtained by stepping down a power supply voltage includes a plurality of voltage generation circuits that each generate a reference voltage; a differential amplifier circuit to whose first input terminal a reference voltage generated by one of the voltage generation circuits is inputted, to whose second input terminal the regulation voltage generated by the regulator circuit is inputted, and that amplifies a difference between the reference voltage and the regulation voltage; and an output circuit to which an output terminal of the differential amplifier circuit is coupled and that outputs the regulation voltage. The output circuit includes a first output transistor of a first conductivity type that is provided between an output terminal of the regulator circuit and a first power supply and to whose gate the output terminal of the differential amplifier circuit is coupled, and a second output transistor of a second conductivity type that is provided between a second power supply and the output terminal of the regulator circuit and to whose gate the output terminal of the differential amplifier circuit is coupled.
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