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:
Aug. 13, 2019
Filed:
May. 09, 2018
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventors:
Kiyotaka Umemoto, Kyoto, JP;
Genki Tsuruyama, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 3/08 (2006.01); G05F 3/24 (2006.01);
U.S. Cl.
CPC ...
G05F 3/08 (2013.01); G05F 3/24 (2013.01);
Abstract
A constant voltage generating circuit includes an ED-type reference voltage supply that generates a predetermined constant voltage by using a first transistor of depletion-type and a second transistor of enhancement-type that are connected in series between a power supply terminal and a ground terminal, and a third transistor a source of which is connected to an output terminal for the constant voltage, a drain of which is connected to the power supply terminal or the ground terminal, and a gate of which is connected to a connection node between the first transistor and the second transistor.