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:
Mar. 06, 2012
Filed:
Mar. 04, 2008
Yoshiki Takagi, Takarazuka, JP;
Yoshiki Takagi, Takarazuka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A voltage regulator circuit and control method therefor. The circuit includes input and output terminals, an output transistor to pass a current from the input terminal to the output terminal according to a control signal, a reference voltage generator unit to generate and output a reference voltage, an output voltage detector unit to detect an output voltage output from the output terminal and generate and output a proportional voltage proportional to a detected voltage, a first error amplifier unit to control the output transistor to make the proportional voltage equal to the reference voltage, and a second error amplifier unit to respond to fluctuation in the output voltage faster than the first error amplifier unit and increase the output current from the output transistor for a period of time when the output voltage rapidly drops. Current consumption of the second error amplifier unit is changed according to the output current.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile