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:
Sep. 10, 2019
Filed:
May. 29, 2015
Fairchild Semiconductor Corporation, Phoenix, AZ (US);
Ta-Yung Yang, Milpitas, CA (US);
Chuh-Ching Li, Taoyuan County, TW;
Ming-Chieh Lee, Pingtung County, TW;
Kuo-Hsien Huang, Taipei County, TW;
FAIRCHILD SEMICONDUCTOR CORPORATION, Phoenix, AZ (US);
Abstract
A LED drive circuit according to the present invention comprises a controller and a programmable signal. The controller generates a switching signal coupled to switch a magnetic device for generating an output current to drive a plurality of LEDs. The programmable signal is coupled to regulate a current-control signal of the controller. The switching signal is modulated in response to the current-control signal for regulating the output current, and the level of the output current is correlated to the current-control signal.