Semiconductor circuit device and switching regulator

Abstract

A semiconductor circuit device includes a differential amplifier circuit and a switching signal output circuit. The differential amplifier circuit outputs a current based on an output voltage of a switching regulator. The switching signal output circuit outputs a switching signal for a switching device based on a voltage at an output node of the differential amplifier circuit and a voltage corresponding to an inductor current flowing through an inductor. The differential amplifier circuit includes a first output-stage transistor and a second output-stage transistor. The first output-stage transistor is provided between a first power supply node and a first node and outputs the current. The second output-stage transistor is provided between the first node and the output node and has a gate to which a first bias voltage is input.

Dependencies are inferred from the claim text.