Patent ID: 8106640

Claim:
A power supply control circuit, comprising: a first current breaking circuit of which an input terminal is connected to a first electrode of an input power supply and which breaks a current from the input power supply based on a break control signal inputted to a control terminal; a first switching circuit of which an input terminal is connected to an output terminal of the first current breaking circuit, of which an output terminal is connected to a reference node, and that switches a current flown to the reference node or a current flown from the reference node based on a first switching control signal inputted to a control terminal; a second switching circuit of which an input terminal is connected to the reference node, of which an output terminal is connected to a second electrode of the input power supply, and that switches a current flown from the reference node or a current flown to the reference node based on a second switching control signal inputted to a control terminal; a second current breaking circuit of which an output terminal is connected to a load and which breaks a current from the input power supply based on the break control signal inputted to a control terminal; and a break control signal generating circuit that outputs the break control signal when the first switching control signal is in an ON state in the case where a voltage of the reference node is lower than a first reference voltage as the comparison result of the voltage of the reference node and the first reference voltage, or when the second switching control signal is in an ON state in the case where the voltage of the reference node is higher than a second reference voltage as the comparison result of the voltage of the reference node and the second reference voltage.