Catalog
10mA-100mA, Adjustable, SOT26
Key Features
• LED Constant Current Regulator Using PNP Emitter-Follower with Emitter Resistor to Current Limit
• IOUT= 10mA ± 10% constant current (Preset)
• IOUTup to 60mA adjustable with an external resistor
• VOUT= 18V Supply Voltage
• PDup to 750mW in SOT26
• Negative temperature coefficient (NTC) reduces IOUTwith increasing temperature
• Parallel devices to increase regulated current
Description
AI
The BCR401UW6Q monolithically integrates a transistor, diodes and resistors to function as a Constant Current Regulator (CCR) for LED driving. The device regulates with a preset 10mA nominal that can be adjusted with external resistor up to 60mA. 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 then it can be used in applications > 18V supply, as long as the maximum supply voltage to the device < 18V.