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:
May. 21, 2013
Filed:
Nov. 10, 2011
Takeshi Hamada, Tokyo, JP;
Yoshihiko Koizumi, Tokyo, JP;
Takeshi Hamada, Tokyo, JP;
Yoshihiko Koizumi, Tokyo, JP;
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Abstract
There is provided a charge pump circuit suited for reducing the power consumption. A capacitor, a capacitor, a capacitor, and switching elementsto, for electrically connecting or separating capacitors, and, repeats: a first state where charge supplied from an input power-supply voltage Vis accumulated in the capacitorsand; a second state where the charge accumulated in the capacitoris transferred to the third capacitor, and a positive output power-supply voltage is held by the charge accumulated in the capacitor; a third state where the charge supplied from an input power supply is accumulated in the capacitorsand; and a fourth state where the charge accumulated in the capacitoris transferred to the third capacitor, and the positive output power-supply voltage Vis held by the charge accumulated in the capacitor