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:
Jun. 30, 2015
Filed:
Jul. 25, 2013
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Akihito Yahagi, Chiba, JP;
Yotaro Nihei, Chiba, JP;
SEIKO INSTRUMENTS INC., Chiba, JP;
Abstract
Provided is a voltage regulator including an overcurrent protection circuit using a simple circuit. The voltage regulator includes the overcurrent protection circuit including: a first sense transistor having a gate connected to an output terminal of an error amplifier circuit and a drain connected to a sense resistor; a second sense transistor having a gate connected to the output terminal of the error amplifier circuit; and a control transistor having a gate connected to an output terminal of a control circuit, a source connected to a drain of the second sense transistor, and a drain connected to the sense resistor, in which the control transistor is turned on in response to a detection signal output by the control circuit until a reference voltage exceeds a predetermined voltage.