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:
Jan. 10, 2012
Filed:
Mar. 04, 2011
Hirokuni Fujiyama, Hyogo, JP;
Hirokuni Fujiyama, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A first resistance element is coupled between a first rectifying element and an output node at which a reference voltage is generated. Second and third resistance elements are coupled in series between a second rectifying element and the output node. A differential amplifier outputs a control voltage corresponding to a difference between a first voltage generated at a connection point of the first rectifying element and the first resistance element and a second voltage generated at a connection point of the second resistance element and the third resistance element. A control circuit supplies a control current corresponding to the control voltage from the differential amplifier. A start-up circuit causes, by supplying a start-up current to the output node in response to supply of a power supply voltage, transition from a first stable state to a second stable state.