Patent ID: 8456235

Claim:
A regulator circuit comprising: a load driving amplifier including a differential pair and configured to output a second signal of a constant power supply voltage and supply a load current through a first output node of the load driving amplifier, the differential pair including a first transistor configured to receive an input of a first signal used as a reference and a second transistor configured to receive an input of a third signal generated on the basis of the second signal the first signal being a signal of a bandgap voltage; a resistance voltage division circuit configured to generate the third signal from the second signal; and a charging-use amplifier configured to charge a capacitance element through a second output node of the charging-use amplifier in a time period during which the load driving amplifier is in an off state, the capacitance element and the second output node of the charging-use amplifier being electrically connected to the first output node of the load driving amplifier.