Patent ID: 9684323
Date: 2017-06-20
CPC Classifications: G05F

Claim:
1. A regulator circuit comprising: a first MOS transistor having a current channel connected between an input terminal and an output terminal; a regulator control circuit configured to control an amount of a current flowing through the current channel of the first MOS transistor towards the output terminal; a second MOS transistor having a current channel connected between the input terminal and the current channel of the first MOS transistor, and a body diode, a forward direction of which is along a direction from the input terminal to the output terminal; and a switch control circuit configured to control the second MOS transistor, wherein the switch control circuit includes a comparator having first and second terminals as input terminals thereof and a third terminal as an output terminal thereof, the first terminal of the comparator connected to the input terminal, the second terminal of the comparator connected to the output terminal, and the third terminal of the comparator connected to a control electrode of the second MOS transistor by which a control signal is supplied to the second MOS transistor, and a resistor connected between the third terminal of the comparator and a node between the current channel of the first MOS transistor and the current channel of the second MOS transistor.