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:
Oct. 22, 2002
Filed:
Feb. 07, 2001
Applicant:
Inventor:
Yoshihide Kanakubo, Chiba, JP;
Assignee:
Seiko Instruments Inc., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/40 ;
U.S. Cl.
CPC ...
G05F 1/40 ;
Abstract
A voltage regulator circuit comprises a reference voltage circuit for generating a reference voltage, an error amplifying circuit for receiving the reference voltage from the reference voltage circuit and comparing the reference voltage with a given voltage resulting from dividing the output voltage of an output terminal by a pair of resistors connected in series, and an output transistor portion having two or more switchable transistors different in driving capability. A switching circuit drives a selected one of the switchable transistors in accordance with a result of the comparison by the error amplifying circuit to thereby limit overshoot of the output voltage.