Temperature compensated parallel LED drive circuit

摘要

A light emitting diode drive circuit provides each of the plurality of parallel light emitting diodes substantially uniform current, causing the light emitting diodes to each have substantially the same brightness. An optional control circuit controls the current flow as a function of an external control signal. Optional temperature derating circuits adjust the intensity of the light emitting diodes as a function of a measured temperature. The measured temperature may be provided externally via a temperature output signal. The light emitting diode drive circuit may be specially adapted for automotive applications.