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. 01, 2008
Filed:
Aug. 31, 2006
Manabu Oyama, Kyoto, JP;
Daisuke Uchimoto, Kyoto, JP;
Manabu Oyama, Kyoto, JP;
Daisuke Uchimoto, Kyoto, JP;
Rohm Co., Ltd., , JP;
Abstract
A first charge pump circuit converts an input voltage (Vin) into a predetermined voltage, to be outputted as a first output voltage (Vout). A second charge pump circuit converts the first output voltage (Vout), outputted from the first charge pump circuit, into a predetermined voltage, to be outputted as a second output voltage (Vout). A control circuit controls charge-discharge states of the first charge pump circuit and the second charge pump circuit. The control circuit synchronously controls a state in which a first output capacitor of the first charge pump circuit is charged, and a state in which a second flying capacitor of the second charge pump circuit is charged.