A semiconductor device according to one embodiment comprises a first transistor, a second transistor, a switch, and a first control circuit. The first transistor including, one end of a current path connected to a first node, another end of the current path connected to a second node, and a gate connected to a third node. The second transistor including, one end of a current path connected to the second node, another end of the current path connected to a fourth node, and a gate connected to the third node. The switch configured to connect the second node and the third node. The first control circuit configured to control the switch.