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:
Feb. 02, 2010
Filed:
Sep. 14, 2006
Masanori Tsuchihashi, Kyoto, JP;
Masanori Tsuchihashi, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
An electronic circuit includes a constant voltage output circuit that outputs a constant voltage and a step-up circuit including an input portion to which outputs of the constant voltage output circuit are connected and is controlled by a control circuit, an overcurrent detecting circuit that detects overcurrent when current of not less than a specified value is supplied to the constant voltage output circuit by not less than a first specified period of time, and an overcurrent protecting circuit that performs operations of protecting the constant current output circuit based on outputs of the overcurrent detecting circuit. The electronic circuit protects, in an electronic circuit using a charge pump type step-up circuit, the step-up circuit from overcurrent in abnormal conditions and achieves more rapid operations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile