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:
Aug. 22, 2006
Filed:
Nov. 17, 2004
Yu-hua Liu, Hsinchu, TW;
Yu-Hua Liu, Hsinchu, TW;
Airoha Technology Corp., Hsinchu, TW;
Abstract
A voltage supplying apparatus is provided for supplying an output voltage to an electronic circuit. The electronic circuit includes a first voltage-drop device. The voltage supplying apparatus includes a current source for supplying a constant current, a second voltage-drop device, and a regulator. The second voltage-drop device is coupled with the current source and has the same feature in process deviation with the first voltage-drop device. The regulator for stabilizing the output voltage includes a voltage input terminal and a voltage output terminal. The voltage input terminal is coupled with the current source and has a first voltage corresponding to the output voltage. The voltage output terminal provides the output voltage and a corresponding output current. When the output current is deviated due to the process deviation of the first voltage-drop device, the first voltage will be shifted accordingly to offset the output current deviation.