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:
Nov. 18, 2008
Filed:
Dec. 13, 2006
Shiro Sakiyama, Osaka, JP;
Yusuke Tokunaga, Osaka, JP;
Shiro Dosho, Osaka, JP;
Toru Iwata, Osaka, JP;
Takashi Hirata, Osaka, JP;
Shiro Sakiyama, Osaka, JP;
Yusuke Tokunaga, Osaka, JP;
Shiro Dosho, Osaka, JP;
Toru Iwata, Osaka, JP;
Takashi Hirata, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A charge pumping circuit includes a first switch for controlling one of push and pull operations in accordance with a first control signal; a current mirror circuit constructed from transistors each having a different polarity from the first switch; a second switch for controlling current input to the current mirror circuit in accordance with a second control signal, the second switch being constructed from a transistor having the same characteristic as a transistor used for constructing the first switch; a first MOS capacitor one end of which is connected to an input side of the current mirror circuit; a second MOS capacitor receiving, at one end thereof, a current concerned with the push and pull operations; and a voltage buffer connected to the first and second MOS capacitors. The other of the push and pull operations is performed with an output current of the current mirror circuit.