Patent ID: 8004809
Filing Date: 2011-08-23
Classification: H03K

Abstract:
1. A semiconductor integrated circuit device, comprising: a first field effect transistor formed on a main surface of a semiconductor substrate; an overcurrent detection circuit which detects an overcurrent of the first field effect transistor; and an overcurrent limitation circuit that is connected between a gate electrode terminal and a source electrode terminal of the first field effect transistor, controls a detected current of the overcurrent detection circuit, and has an output voltage that varies according to a variation of a threshold voltage of the first field effect transistor, wherein the overcurrent detection circuit comprises: a second field effect transistor whose gate electrode is connected to a connection point between the third resistance element and the fourth resistance element, wherein the overcurrent limitation circuit comprises: wherein the series circuit includes a second resistance element and “N” diode(s) (“N” is an integer of one or more) that is to be in a forward direction connected in a series form, the diode(s) is(are) arranged to compensate a temperature dependency of the third field effect transistor.