The BCR 401U E6327 is a LED Driver to drive low power LEDs. The BCR 401U E6327 can be operated at higher supply voltages by putting LEDs between the supply voltage VS and the power supply pin of the LED driver. The BCR 401U E6327 is a perfect fit for numerous low power LED applications by combining small form factor. This LED driver offers several advantages to resistors like significantly higher current control at very low voltage drop ensuring high lifetime of the LEDs. It features longer lifetime of the LEDs due to reduced output current at higher temperatures (negative thermal coefficient). Dimming is possible by using an external digital transistor at the ground pin.
Output current adjustable up to 65mA with an external resistor
Easy paralleling of drivers to increase current
High current accuracy at supply voltage variation
Negative thermal coefficient of -0.2%/K reduces output current at higher temperatures
Homogenous light output despite varying forward voltages in different LED strings
Homogenous light output of LEDs despite voltage drop across long supply lines
Homogenous light output independent from supply voltage variations
Smaller form factor
Higher reliability due to less soldering joints
Higher output current accuracy due to pretested LED drivers
