Patent ID: 7436225
Filing Date: 2008-10-14
Classification: G01R,H03K

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; an output transistor; and a current control circuit for controlling an output current of the output transistor, wherein the current control circuit is disposed on the substrate, the substrate includes a first pad and a second pad, the current control circuit includes a first resistor, a second resistor, a control signal generation circuit, a first switching circuit, and a second switching circuit, the first resistor is disposed between the first pad and the output transistor, the second resistor is disposed between the second pad and the output transistor, and has a resistance higher than the first resistor, the control signal generation circuit generates a control signal to the output transistor based on one of a voltage of both ends of the first resistor and a voltage of both ends of the second resistor, the first switching circuit is disposed between both ends of the first resistor and the control signal generation circuit, the second switching circuit is disposed between both ends of the second resistor and the control signal generation circuit, and the first switching circuit or the second switching circuit is controlled to be in an on-state.