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. 26, 1999
Filed:
Jun. 04, 1997
Applicant:
Inventor:
Stephen W Bryson, Cupertino, CA (US);
Assignee:
Fairchild Semiconductor Corporation, Portland, ME (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ; H02J / ;
U.S. Cl.
CPC ...
323268 ; 307 18 ; 307 24 ; 307 52 ;
Abstract
A dual adjustable voltage regulator combining a DC--DC switching regulator with a linear regulator implemented on a single chip is disclosed. The invention provides switching circuitry that can select between a fixed output voltage level and a user-adjustable output voltage. The circuit further provides means to automatically detect and generate power supply voltage levels as required by the system.