Patent ID: 7626792

Claim:
A power supply control apparatus comprising: a power supply terminal; an output terminal; a first MOS transistor of a first channel type connected between the power supply terminal and the output terminal and having a gate supplied with a control signal; a second MOS transistor of the first channel type connected between the power supply terminal and a first circuit node and having a gate supplied with the control signal; a resistor connected between the first circuit node and the output terminal; a third MOS transistor of the first channel type connected between the first circuit node and a second circuit node and having a gate connected to the second circuit node, a potential at the second circuit node varying in conjunction with a voltage difference between the first circuit node and the output terminal; a first current source connected between the power supply terminal and the second circuit node; a fourth MOS transistor of the first channel type connected between the output terminal and a third circuit node and having a gate connected to the second circuit node; and a second current source connected between the power supply terminal and the third circuit node.