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. 24, 2008
Filed:
Jan. 25, 2005
Yongliang Wang, Saratoga, CA (US);
John Pasternak, Santa Clara, CA (US);
Yongliang Wang, Saratoga, CA (US);
John Pasternak, Santa Clara, CA (US);
Sandisk Corporation, Milpitas, CA (US);
Abstract
A step down voltage regulator with bypass comprised of devices designed to operate over a maximum rated voltage lower than a supply voltage. The regulator includes an output regulation device coupled to the supply voltage and an output. An output device protection circuit is provided which is responsive to the supply voltage and the output to ensure that the maximum rated voltage of the output regulation device is not exceeded. A bypass circuit having a bypass output device and being coupled to the supply voltage is provided with a protection circuit. The output regulation devices comprise p-channel transistors, and may have an operating maximum rated voltage in a range of 2.7-3.6 volts with the supply voltage is in a range of 4.4-5.25 volts, or 2.9-3.5 volts.