US Patent 7557641 Fractional charge pump for step-down DC-DC converter
Patent 7557641 was granted and assigned to Catalyst Semiconductor on July, 2009 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
February 22, 2007
Date of Patent
July 7, 2009
Patent Application Number
11678048
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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