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:
Mar. 08, 2022
Filed:
Feb. 22, 2019
Applicant:
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Inventor:
Hiroyuki Watanabe, Kanagawa, JP;
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/012 (2006.01); H03K 17/687 (2006.01); H03K 17/22 (2006.01); G05F 3/26 (2006.01);
U.S. Cl.
CPC ...
H03K 3/012 (2013.01); G05F 3/26 (2013.01); H03K 17/22 (2013.01); H03K 17/6872 (2013.01); H03B 2200/0038 (2013.01); H03D 2200/0033 (2013.01);
Abstract
A starting circuit capable of further reducing an influence of a variation in the threshold voltage of a transistor is proposed. The starting circuit includes an N-type first MOS transistor whose threshold voltage is near 0 V, a resistor interposed between a source terminal of the first MOS transistor and a ground, and a control circuit controlling a gate voltage of the first MOS transistor. An amount of first current transmitted to a device to be driven and starting the device is controlled according to the control of the gate voltage.