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:
Feb. 18, 2003
Filed:
Dec. 10, 2001
Anton Bakker, Delft, NL;
Qing He, Gilbert, AZ (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention relates to a low dropout voltage regulator comprising a noise reduction architecture. The low dropout voltage regulator according to the invention comprises a comparison stage for comparing a reference voltage signal with a feedback signal and for providing a first output voltage signal in dependence thereupon. The feedback signal is obtained from a node interposed between a first resistor and a second resistor of a voltage divider. The voltage divider is interposed between an input port for receiving an input voltage signal and ground and is connected to an output terminal of the comparison stage. The first output voltage signal is then low pass filtered prior provision to a gain stage. The gain stage provides gain to the first output voltage signal prior provision to an output port. The noise reduction architecture of the low dropout voltage regulator according to the invention is highly advantageous by providing high efficiency while high frequency noise is substantially reduced.