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This Linear LED driver is designed to meet the stringent requirements of automotive applications.
The BCR405UW6 monolithically integrates a transistor, diodes and resistors to function as a Constant Current Regulator (CCR) for LED driving. The device regulates with a preset 50mA nominal that can be adjusted with external resistor up to 100mA. It is designed for driving LEDs in strings and will reduce current at increasing temperatures to self-protect. Operating as a series linear CCR for LED string current control then it can be used in applications with supply voltages up to 40V.
With no need for additional external components, this CCR is fully integrated into a SOT26 minimizing PCB area and component count.
Interior and Exterior Automotive LED Lighting
Dome and Mood Lighting
Side Marker Lights
LED Constant Current Regulator Using PNP Emitter-Follower with Emitter Resistor to Current Limit
IOUT = 50mA ± 10% constant current (Preset)
IOUT up to 100mA adjustable with an external resistor
VS – 40V Supply Voltage
PD up to 1W in SOT26/ SC74R
LED dimming using PWM up to 25kHz
Negative temperature coefficient (NTC) reduces Iout with increasing temperature