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:
Apr. 07, 2020
Filed:
Mar. 29, 2018
Ablic Inc., Chiba-shi, Chiba, JP;
Kaoru Sakaguchi, Chiba, JP;
ABLIC Inc., Chiba-shi, JP;
Abstract
Provided is a monitoring circuit for a system including an LDO regulator. The monitoring circuit includes: a non-saturation detection circuit configured to detect a non-saturation state of an output transistor of the LDO regulator configured to supply a power supply voltage to an MPU; a current detection circuit configured to detect that an output current from the output transistor is equal to or more than a predetermined current value; and a watchdog timer configured to monitor operation of the MPU. The watchdog timer is enabled when the output transistor is not in a non-saturation state and an output current from the output transistor is equal to or more than a predetermined current value.