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. 01, 2013
Filed:
Jan. 11, 2011
Mithlesh Shrivas, Noida, IN;
Mayank Jain, Noida, IN;
Mithlesh Shrivas, Noida, IN;
Mayank Jain, Noida, IN;
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
An LDO regulator system has first and second current mirror circuits connected to its output terminal. A load attached to the output terminal is supplied with a constant voltage. Variations in the load that cause variations in the magnitude of the output voltage trigger one of the first or second current mirror circuits to generate a current that varies the magnitude of a gate voltage of a pass-transistor. The variation in the gate voltage in turns varies the drain current of the pass-transistor, which varies the output voltage to counter the change in the magnitude of the output voltage. Using the first and second current mirror circuits avoids the need for a large load capacitor and very high bandwidth of a conventional LDO regulator.