Voltage regulator

Abstract

A voltage regulator is provided. The voltage regulator includes an amplifier circuit, a first output stage circuit, a switching circuit, and at least one second output stage circuit. The amplifier circuit includes a non-inverting input node, an inverting input node, a first output node, and a second output node. The non-inverting input node receives a reference voltage, and the inverting input node receives a feedback voltage. The first output stage circuit is coupled to the first output node and the second output node of the amplifier circuit. The at least one second output stage circuit is coupled to the first output stage circuit in parallel through the switching circuit. The at least one switching circuit is controlled by a control signal. An output current of the voltage regulator is provided by the first output stage circuit and at least one second output stage circuit selected by the control signal.

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