BCR402UW6Q

Description

The BCR402UW6Q monolithically integrates a transistor, diodes and resistors to function as a Constant Current Regulator (CCR) for LED driving. The device regulates with a preset 20mA nominal that can be adjusted with external resistor up to 65mA. It is designed for driving 0.25W LEDs in strings and will reduce current at increasing temperatures to self-protect. Operating as a series linear CCR for LED string current control 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.

Feature(s)

• LED Constant Current Regulator Using PNP Emitter-Follower with Emitter Resistor to Current Limit
• I_OUT = 20mA ± 10% constant current (Preset)
• I_OUT up to 65mA adjustable with an external resistor
• V_OUT = 40V Supply Voltage
• P_D up to 750mW in SOT26
• Negative temperature coefficient (NTC) reduces I_{OUT with increasing temperature}
• Parallel devices to increase regulated current

Application(s)

Constant current regulation (CCR) in:

• Emergency lighting
• Signage, advertising, decorative and architectural lighting
• Retail lighting in fridge, freezer case and vending machines