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:
Dec. 09, 2025
Filed:
May. 15, 2023
Realtek Semiconductor Corporation, Hsinchu, TW;
Yi Feng, Hsinchu, TW;
Hsueh-Yu Kao, Hsinchu, TW;
Realtek Semiconductor Corporation, Hsinchu, TW;
Abstract
A low-dropout regulator includes an amplifier circuit, a buffer circuit, a control circuit, a power transistor, and a feedback circuit. The amplifier circuit is configured to operate based on an input voltage and generate a first voltage at a first node according to a reference voltage and a feedback voltage. The buffer circuit is configured to generate a second voltage at a second node according to the first voltage. The control circuit is configured to work with the buffer circuit to form a noise canceller. The noise canceller is coupled between the first node, the second node, and a voltage terminal. The power transistor is configured to generate an output voltage according to the input voltage and the second voltage. The feedback circuit is configured to generate the feedback voltage according to the output voltage.