| 摘要 |
A low-power consumption power supply device that is capable of supplying an adequate current in the case of a heavy load and achieving a rapid transient response when the load fluctuates. The power supply device includes NMOS-type output transistors that are provided between the input power supply that supplies power to the output terminal and ground potential, a reference voltage generation circuit that generates a reference voltage, and differential amplifier circuits that control each of the NMOS-type output transistors by having an output supply voltage inputted to the differential amplifier circuits as feedback and by comparing the output supply voltage with the reference voltage, wherein the differential amplifier circuits provide an input offset voltage between the inputted reference voltage and output supply voltage in order to provide the output supply voltage with a voltage range in which the NMOS-type transistors are both OFF.
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