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. 31, 2010
Filed:
Feb. 15, 2008
Nathan R. Carter, Santa Clara, CA (US);
Yu-lun Richard LU, San Jose, CA (US);
Nathan R. Carter, Santa Clara, CA (US);
Yu-Lun Richard Lu, San Jose, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A low voltage shutdown circuit comprises an input node for receiving a voltage Vto be monitored, first and second voltage-to-current (V to I) converters arranged to receive Vat respective inputs and to convert Vto currents Iand Iat respective outputs, and a current comparison circuit arranged to produce an output which is in a first state when I<Iand in a second state when I>I. The V to I converters have respective voltage-to-current transfer functions which intersect at a non-zero threshold voltage V, such that the current comparison circuit output toggles when V<V. This output can be used as needed to, for example, trigger the shut down of other circuitry.