Patent ID: 8525506

Claim:
A semiconductor integrated circuit comprising: a constant current circuit including: a first current mirror circuit that includes a first transistor and a second transistor, and a second current mirror circuit that includes a third transistor that is connected to a first node to which current flows from the first transistor, and a fourth transistor that is connected to a second node to which current flows from the second transistor; a starter circuit including: a sixth transistor that uses a potential of the first node as a control voltage, a seventh transistor that is connected to a third node to which current flows from the sixth transistor, a gate electrode of the seventh transistor being at a ground potential, a capacitance element that is connected to a fourth node to which current flows from the seventh transistor, and a fifth transistor that uses a potential of the fourth node as a control voltage, and that supplies start-up current to the constant current circuit via the second node; and a power supply start-up circuit including an eighth transistor, of which a source electrode is fixed at a power supply voltage and a gate electrode is at the ground potential, and that supplies power from a drain electrode to the constant current circuit and the starter circuit.