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. 07, 2007
Filed:
Feb. 12, 2003
Ludovic Oddoart, Frouzins, FR;
Gerald Miaille, Tempe, AZ (US);
Ludovic Oddoart, Frouzins, FR;
Gerald Miaille, Tempe, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A low drop-out voltage regulator having a pass device (Mp), an error amplifier (M-M) and a double regulation loop including DC feedback loop (R, R) and an AC feedback loop (Rf, Cf) including a high pass filter (Cf). Combining these two loops creates an ultra low frequency internal pole which makes the regulator stable substantially independent of the output bypass capacitor's value. This provides the following advantages: allows the use of very low bypass capacitors; allows to extend the PSRR frequency behavior; allows an increase in the regulator's efficiency (reduced power consumption on heavy loads).