Features

LED Constant Current Regulator Using NPN Emitter-Follower with

Emitter Resistor to Current Limit

IOUT – 10mA ±10 Constant Current (Preset)

IOUT up to 350mA Adjustable with an External Resistor

(BCR421U)

VOUT – 40V Supply Voltage

PD up to 1.7W in U-DFN2020-6 Package

0.6mm Height for Low-profile Edge Lighting

Low-Side Control Enabling PWM Input < 25kHz (BCR421U)

Negative Temperature Coefficient (NTC) Reduces IOUT with

Increasing Temperature

Parallel Devices to Increase Regulated Current

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)

Qualified to AEC-Q101 Standards for High Reliability

PPAP Capable (Note 4)

Applications

Interior and Exterior Automotive LED Lighting

Dome and Mood Lighting

Puddle Lighting

Side Marker Lights

Edge Lighting Strips