The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2010
Filed:
Nov. 16, 2007
Hirohisa Abe, Osaka, JP;
Hirohisa Abe, Osaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A switching regulator and a semiconductor device having the same are disclosed, the switching regulator being capable of preventing turn-ON of a switching transistor when the connection between a control circuit controlling the operation of the switching transistor and ground potential is cut off. The switching regulator includes, for example, an NMOS transistor that is turned OFF to decrease the gate voltage of the switching transistor to turn off the switching transistor to be electrically non-conducting when the connection between a first ground terminal and ground potential is cut off by, for example, the disconnection between the first ground terminal and the ground line of the printed circuit board.