Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
U-DFN2020-6-Type-F.png10mA-150mA, Adjustable, DFN2020
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These Linear LED drivers are designed to meet the stringent requirements of automotive applications.
The BCR420U and BCR421U monolithically integrate transistors, diodes and resistors to function as a Constant Current Regulator (CCR) for linear LED driving. The device regulates with a preset 10mA nominal that can be adjusted with an external resistor up to 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, it can be used in multiple applications, as long as the maximum supply voltage to the device is < 40V.
With the low-side control, the BCR421U has an Enable (EN) pin which can be pulse-width modulated (PWM) up to 25kHz by a micro-controller for LED dimming.
With no need for additional external components, this CCR is fully integrated into a 2mm x 2mm x 0.6mm package (U-DFN2020-6) minimizing PCB area, off-board height, and component count.
| AEC Qualified | Yes |
|---|---|
| Compliance (Only Automotive supports PPAP) | Automotive |
| Topology | Linear LED Driver |
| Minimum Supply Voltage (V) | 1.4 V |
| Maximum Supply Voltage (V) | 40 V |
| Maximum VOUT (V) | 40 V |
| Number of Channels | 1 |
| LED Current Sense Voltage (mV) | 700 mV |
| Output Current (mA) | 350 mA |
| Channel Max. Output Current (mA) | 10 Preset mA |
| Accuracy (%) | 10 % |
| Dimming | PWM by external transistor |
| Temperature Range (°C) | -55 to 150 °C |
