Patents by Inventor Margaret E. Fuchs

Margaret E. Fuchs has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Low voltage metal oxide semiconductor threshold referenced voltage regulator and method of using
    Patent number: 6504424
    Abstract: Depletion mode pass transistor (38) accepts input voltage Vin and provides regulated output voltage Vout. The regulated output voltage is referenced to the threshold voltage of MOSFET (40) and is directly proportional to the ratio of resistors (50 and 52). MOSFET (58) provides enabling and disabling of voltage regulator (54). Multiple voltage regulators (FIG. 5) having multiple output potentials are realized on the same semiconductor die producing the same threshold potential for MOSFET's (40), whereby the output potentials are selectable using the ratio of resistors 50 and 52. Constant current source (56) reduces output voltage variation due to input voltage variation.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: January 7, 2003
    Assignee: Semiconductor Components Industries LLC
    Inventors: David M. Heminger, Stephen P. Robb, Margaret E. Fuchs