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:
Aug. 12, 2003
Filed:
Aug. 08, 2001
Applicant:
Inventors:
Masanari Shougomori, Kyoto, JP;
Koichi Inoue, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/00 ;
U.S. Cl.
CPC ...
H03K 3/00 ;
Abstract
A semiconductor device has a transistor that controls, according to the resistance of the load externally connected to the output terminal thereof, the current fed to the base of an output-stage transistor for driving the load to turn it on. In this circuit configuration, even if a base current of the output-stage transistor is so determined as to permit the semiconductor device to drive the heaviest permissible load, only a reduced amount of extra current is fed to the base of the output-stage transistor when it is turned on with a light load connected to the semiconductor device.