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1. A power supply circuit, comprising:
a voltage generating circuit that generates an output voltage responsive to a reference voltage and outputs the output voltage at a voltage output terminal; a power supply-side resistor that receives a power supply-side detection voltage that is based on the output voltage at a first end thereof; a power supply-side capacitor connected to a second end of the power supply-side resistor at a first end thereof and to a ground at a second end thereof; a ground-side resistor connected to the voltage output terminal at a first end thereof; a ground-side capacitor connected to a second end of the ground-side resistor at a first end thereof and to the ground at a second end thereof; a power supply-side amplifier that is connected to the voltage output terminal at a non-inverting input terminal thereof and to the second end of the power supply-side resistor at an inverting input terminal thereof and outputs a power supply-side control signal at an output terminal thereof; a ground-side amplifier that is connected to the second end of the ground-side resistor at a non-inverting input terminal thereof, receives a ground-side detection voltage that is based on the output voltage at an inverting input terminal thereof and outputs a ground-side control signal; a power supply-side switch element that is connected to a power supply at a first end thereof and to the voltage output terminal at a second end thereof and is controlled by the power supply-side control signal; and a ground-side switch element that is connected to the voltage output terminal at a first end thereof and to the ground at a second end thereof and is controlled by the ground-side control signal. |
