Patent ID: 7965125

Claim:
A current drive circuit, comprising: an output terminal connected to a load, which is connected to a power supply voltage; an output transistor including a drain connected to the output terminal and a source connected to a common potential line; a first transistor including a gate connected to a gate of the output transistor, and a drain connected to a first current source, wherein the first current source supplies a reference current; a second transistor including a gate connected to the gate of the output transistor, a drain connected to a source of the first transistor, and a source connected to the common potential line; a third transistor connected between the source and drain of the first transistor; a fourth transistor including a gate connected to the first current source, and a source connected to the gate of the output transistor; and a second current source connected between the gate of the output transistor and the common potential line; wherein a gate of the third transistor is supplied with voltage of the output terminal.