Patent ID: 9028987
Filing Date: 2015-05-12
Classification: H01L,H01M,H02J,Y02E,Y02P

Abstract:
1. A semiconductor device comprising: an integrated circuit configured to sense a voltage of a battery cell and outputs a control signal; a charge switch electrically coupled to the integrated circuit and configured to interrupt a charge path according to the control signal output from the integrated circuit; a first lead electrically coupled to the integrated circuit; a second lead electrically coupled to the charge switch; and a sealing portion that seals the integrated circuit, charge switch, the first lead, the second lead, and a dummy lead, wherein the sealing portion comprises a charge switch mounting board and the charge switch is mounted on the charge switch mounting board, wherein the charge switch mounting board is exposed outside the sealing portion so that the charge switch mounting board serves as a conductive pad that can be coupled to the outside, wherein the dummy lead is electrically isolated from all circuits sealed by the sealing portion, and wherein the integrated circuit and the charge switch are located in the sealing portion and are a single package.