DETECTION CIRCUIT

摘要

Provided by the present invention is a detection circuit which avoids detection error immediately after the power of the detection circuit is turned on. The detection circuit comprises: an output transistor which is installed between a voltage input terminal and a voltage output terminal; and a load open detection circuit which detects the open state of a load being in contact with the voltage output terminal. The output circuit of the load open detection circuit has a composition in which a first transistor and a second transistor are in contact with each other in series, wherein the first transistor is connected with the output transistor by sharing a gate and the second transistor is connected in series and enables a load open detecting signal to be inputted to the gate. The first transistor is formed to be turned off when the output transistor is turned off.