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. 22, 2010
Filed:
Aug. 01, 2007
Gary M. Hurtz, Shanghai, CN;
Richard L. Gray, Saratoga, CA (US);
David J. Kunst, Cupertino, CA (US);
Gary M. Hurtz, Shanghai, CN;
Richard L. Gray, Saratoga, CA (US);
David J. Kunst, Cupertino, CA (US);
Active-Semi, Inc., British Virgin Islands, VG;
Abstract
A single terminal is usable to configure an integrated circuit into one of three states. A circuit within the integrated circuit is coupled to the terminal and determines whether the terminal: 1) is tied low by an external connection, or 2) is tied high by an external connection, or 3) is floating or is substantially floating. If the circuit determines that the terminal is floating or is substantially floating, then the circuit sets an operational characteristic of a portion of the circuit (for example, sets a maximum current with which the circuit charges a battery) to have a value that is a function of a resistance of an external resistor coupled to the terminal. If no external resistor is present, then the terminal is floating and the operational characteristic is set to have a zero value. The terminal and circuit are particularly suited to use in a USB battery charger.