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:
Sep. 02, 2025
Filed:
Dec. 14, 2022
Realtek Semiconductor Corporation, Hsinchu, TW;
Yen-Po Lai, Hsinchu, TW;
Chih-Lung Chen, Hsinchu, TW;
Realtek Semiconductor Corporation, Hsinchu, TW;
Abstract
A low-dropout regulator system includes a low-dropout regulator. A comparator circuit generates a comparison voltage according to a reference voltage and a feedback voltage. An amplifier circuit generates an amplifying voltage according to the comparison voltage. A transistor receives an input voltage and is controlled by the amplifying voltage to generate an output voltage at an output terminal. A first resistor circuit is coupled between a first node and a ground terminal. A second resistor circuit is coupled between the output terminal and the first node. At a start-up timing point of the low-dropout regulator, a resistance value of the second resistor circuit is a first resistance value. After the input voltage reaches a maximum voltage, the resistance value of the second resistor circuit is a second resistance value. The second resistance value is larger than the first resistance value.