IINTEGRATED CIRCUIT ELEMENT AND ELECTRONIC CIRCUIT FOR LIGHT EMITTING DIODE APPLICATIONS, HAVING THERMISTOR FOR FORWARD VOLTAGE DROP TEMPERATURE COMPENSATION

摘要

A system (100), method and circuit (100) for providing constant current to an LED array (125) are described herein. These include a resistor (130) coupled to the LED array (125) and a thermistor (140) coupled to the LED array (125) and the resistor (130). The resistor (130) and the thermistor (140) limit the current at a given temperature and compensate for the forward voltage shift of the LED array (125) as a function of temperature. The system, method and integrated circuit may also include a fuse (150) coupled to the thermistor (140). The fuse (140) allows the system to continue to operate if a single LED (120) within the LED array (125) fails to short- circuit.