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. 15, 2025
Filed:
May. 12, 2023
Lapis Technology Co., Ltd., Yokohama, JP;
Takayoshi Fujino, Yokohama, JP;
LAPIS TECHNOLOGY CO., LTD., Yokohama, JP;
Abstract
A regulator circuit includes an operational amplifier that generates a differential voltage representing a difference between a voltage obtained by dividing an output voltage and a reference voltage. The regulator circuit further includes a first current path that allows through a first current corresponding to the differential voltage, a current mirror circuit that is connected to the first current path and that sends to an output terminal an output current that is a copy of the first current, and an overcurrent protection circuit that limits a current value of the output current to a prescribed value or lower. The overcurrent protection circuit includes a first transistor that is connected to the first current path and that receives a current corresponding to the prescribed value as an upper limit current at a gate thereof while applying the first current between source and drain thereof.