The linear constant current regulator （CCR） is a simple， economical and robust device designed to provide a cost?effective solution for regulating current in LEDs （similar to Constant Current Diode， CCD）。 The CCR is based on Self-Biased Transistor （SBT） technology and regulates current over a wide voltage range. It is designed with a negative temperature coefficient to protect LEDs from thermal runaway at extreme voltages and currents. The CCR turns on immediately and is at 25% of regulation with only 0.5 V Vak. It requires no external components allowing it to be designed as a high or low?side regulator. The high anode-cathode voltage rating withstands surges common in Automotive， Industrial and Commercial Signage applications. The CCR comes in thermally robust packages and is qualified to AEC-Q101 standard， and UL94?V0 certified.