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. 09, 2012
Filed:
Jan. 04, 2011
Kwan-jen Chu, Hsinchu, TW;
Nien-hui Kung, Toufen Township, Miaoli County, TW;
Hsuan-kai Wang, Banqiao, TW;
Kwan-Jen Chu, Hsinchu, TW;
Nien-Hui Kung, Toufen Township, Miaoli County, TW;
Hsuan-Kai Wang, Banqiao, TW;
Richtek Technology Corp., Hsinchu, TW;
Abstract
A fast start-up low-voltage bandgap reference voltage generator uses two current generators to provide a first current having a positive temperature coefficient and a second current having a negative temperature coefficient, respectively, and a resistor to generate a temperature independent output voltage according to the sum of the first and second currents. The current generator for providing the first current has a self-bias circuit which uses a single MOSFET to establish the first current, and thereby avoids error caused by mismatched MOSFETs.