Patent ID: 9270162
Filing Date: 2016-02-23
CPC Classification: H02H,H02M

Claim Text:
1. A switching regulator comprising: an error amplification circuit which amplifies a difference between a feedback voltage and a reference voltage based on an output voltage and outputs the amplified difference; a PWM comparator which compares an output of the error amplification circuit with an output of a triangular wave oscillation circuit, and controls an output transistor; an overcurrent detection circuit monitors a load current flowing through a load connected to an output terminal via a sense resistor through which the load current flows, detects an overcurrent generated from the load current, and outputs an overcurrent detection signal causing a switching operation to stop; and a negative feedback control circuit which receives the overcurrent detection signal, and, while the overcurrent condition is detected, controls and holds the load current to a predetermined current value greater than zero until the overcurrent condition is removed.