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. 07, 2003
Filed:
Aug. 29, 2001
David M. Heminger, Mesa, AZ (US);
Stephen P. Robb, Tempe, AZ (US);
Margaret E. Fuchs, Mesa, AZ (US);
Semiconductor Components Industries LLC, Phoenix, AZ (US);
Abstract
Depletion mode pass transistor ( ) accepts input voltage V and provides regulated output voltage V . The regulated output voltage is referenced to the threshold voltage of MOSFET ( ) and is directly proportional to the ratio of resistors ( and ). MOSFET ( ) provides enabling and disabling of voltage regulator ( ). Multiple voltage regulators (FIG. ) having multiple output potentials are realized on the same semiconductor die producing the same threshold potential for MOSFET's ( ), whereby the output potentials are selectable using the ratio of resistors and . Constant current source ( ) reduces output voltage variation due to input voltage variation.