Rosenberg, Klein & Lee
Thermal foldback control for a light-emitting diode
By monitoring the temperature of an LED and the temperature of a controller chip for the LED, a thermal foldback control is employed to gradually decrease the driving current of the LED before the LED or the controller chip is over heated, so as to prevent an over temperature protection from being triggered to shutdown the controller chip to cause the LED to undesirably flicker.
Richtek Technology Corp.
Y H
Y02B H05B
additional inventional
Pei-Cheng Jing-Meng
Huang Liu