DC-DC converter and semiconductor integrated circuit

摘要

A DC-DC converter according to the present invention includes a monitoring circuit which monitors an output signal of a mode comparator and which outputs a mode change detection signal when the output of the mode comparator has output a light load mode signal, and a clamp circuit which is connected between power supply and ground and which changes a voltage at a first end of a filter circuit toward a preset prescribed voltage according to the mode change detection signal.