BCR421UW6Q-7

BCR421UW6Q-7 is a linear LED constant current regulator. This linear LED driver is designed to meet the stringent requirements of automotive applications. The BCR421UW6Q monolithically integrates transistors, diodes, and resistors to function as a constant current regulator (CCR) for linear LED driving. This device regulates with a preset 10mA nominal that can be adjusted with an external resistor upto 350mA. 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, the device can be used in multiple applications, as long as the maximum supply voltage to the device is <lt/> 40V. With the low-side control, this device has an enable (EN) pin which can be pulse-width modulated (PWM) upto 25KHz by a microcontroller for LED dimming. It is used in applications such as automotive interior lighting, mood, and decorative lighting.

• LED constant current regulator using NPN emitter-follower with emitter resistor to current limit
• Negative temperature coefficient (NTC) reduces IOUT with increasing temperature
• Parallel devices to increase regulated current
• UL flammability rating 94V-0
• Terminals: finish - matte tin plated leads
• Collector-emitter breakdown voltage is 40V min at (IC = 1mA)
• Enable current is 1.2mA typical at (TA = +25°C, VEN = 3.3V)
• Output current is 10mA typical at (VOUT = 1.4V; VEN = 3.3V)
• Voltage drop (VREXT) is 0.95V typical at (IOUT = 10mA)
• Junction temperature range from -55°C to +150°C, SOT26 package