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:
Jul. 18, 2023
Filed:
Mar. 16, 2022
Nuvoton Technology Corporation, Hsinchu, TW;
Hua-Chun Tseng, Hsinchu, TW;
NUVOTON TECHNOLOGY CORPORATION, Hsinchu, TW;
Abstract
The present disclosure relates to a low-dropout regulator that limits a quiescent current. It mainly includes an error amplifier, an output switching transistor, a feedback switching transistor, a current duplicating circuit, and a clamping current source. The clamping current source is added between an input voltage and the feedback switching transistor, so that a feedback current outputted by the feedback switching transistor is clamped, and the highest value is only proportional to a current value of the clamping current source. In this way, the quiescent current outputted by the low-dropout regulator is no longer increasing indefinitely in proportional to a load current, which can effectively solve the technical problems of poor stability and decreased efficiency caused by the infinite increase of the quiescent current.