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:
May. 01, 2007
Filed:
Aug. 01, 2003
John Pasternak, Santa Clara, CA (US);
John Pasternak, Santa Clara, CA (US);
Sandisk Corporation, Milpitas, CA (US);
Abstract
A system and method for supplying power to a peripheral device where the voltage supplied by a host device may be the voltage required for operation of the peripheral, or a higher voltage. A memory system includes a voltage regulator including an input, and output and a bypass shorting the input to the output. A voltage detector communicates with the regulator. A Bypass enable signal operable responsive to a signal generated by the host device indicating that the power up of the host is complete is coupled to the bypass element. A method for operating a voltage regulator in a memory system includes the steps of: providing a voltage regulator having an input and an output, and including a bypass shorting the input to the output; setting the bypass to off prior to power up of a host device; responsive to a power up completion signal from a host device, determining the power supplied by the host; and if the power supplied by the host is below a threshold operating voltage, enabling the bypass.