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Patent Searching and Data


Title:
SWITCH CIRCUIT, SEMICONDUCTOR DEVICE, AND BATTERY DEVICE
Document Type and Number:
Japanese Patent JP2014161186
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor device having further high safety by preventing flow of an unexpected current for circuit operation even when it is reverse-connected.SOLUTION: A semiconductor device includes a switch circuit including a first transistor; a second transistor having a drain connected to a drain of the first transistor, having a source and a back gate connected to a gack gate of the first transistor, and having a gate connected to a source of the first transistor; and a third transistor having a drain connected to the source of the first transistor, having a source and a back gate connected to the back gate of the first transistor, and having a gate connected to a drain of the first transistor.

Inventors:
SAKURAI ATSUSHI
SAITO AKIRA
Application Number:
JP2013031365A
Publication Date:
September 04, 2014
Filing Date:
February 20, 2013
Export Citation:
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Assignee:
SEIKO INSTRUMENTS INC
International Classes:
H02J1/00; G01R19/00; H02H11/00; H02J7/00; H02J7/02
Domestic Patent References:
JP2003163589A2003-06-06
JPH0549181A1993-02-26
JP2007181084A2007-07-12
JP2003289629A2003-10-10
Foreign References:
US5767733A1998-06-16
US5594381A1997-01-14
Attorney, Agent or Firm:
Kentaro Kuhara
Noriaki Uchino
Nobuyuki Kimura