SEMICONDUCTOR DEVICE, BATTERY STATE MONITORING MODULE, AND VEHICLE SYSTEM

摘要

PROBLEM TO BE SOLVED: To solve such a problem that a conventional battery state monitoring device cannot accurately detect a short circuit between terminals.SOLUTION: A semiconductor device comprises: first and second external terminals T1 and T2 connected to a power distribution line connecting one end of current detection resistance RS and a power terminal of a battery; a third external terminal T3 connected to the other end of the current detection resistance; and a control circuit 30 which controls output of second measurement current to the third external terminal T3. The device measures voltage difference between the first external terminal T1 and the second external terminal T2.