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.

Date of Patent:
Jan. 06, 2026

Filed:

May. 11, 2023
Applicant:

Realtek Semiconductor Corporation, Hsinchu, TW;

Inventors:

Sheng-Wei Lin, Hsinchu, TW;

Wei-Cheng Tang, Hsinchu, TW;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/575 (2006.01); G05F 1/46 (2006.01); G05F 3/30 (2006.01);
U.S. Cl.
CPC ...
G05F 1/575 (2013.01); G05F 1/468 (2013.01); G05F 3/30 (2013.01);
Abstract

A low-dropout regulator circuit includes a reference circuit, an amplifying circuit, a power switch circuit, a feedback circuit, and a control circuit. The reference circuit is configured to generate a reference voltage. The amplifying circuit is configured to generate an amplifying voltage according to the reference voltage and a feedback voltage. The power switch circuit is configured to receive the amplifying voltage and generate an output voltage at an output terminal according to an input voltage. The feedback circuit is configured to generate the feedback voltage according to the output voltage. The control circuit is configured to control the power switch circuit according to the input voltage and a signal from the reference circuit.


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