Infineon Technologies BCR431U Linear Low Voltage Drop LED Driver

Infineon Technologies BCR431U Linear Low Voltage Drop LED Driver is designed to regulate LED current in standalone operation without any external power transistors. The BCR431U is suitable for driving currents up to 37mA, with a supply voltage range from 6V to 42V. The LED current level can be adjusted by connecting a high-ohmic resistor R_set to pin RS.

The minimal voltage drop at the integrated LED driver stage is 200mV (maximum) at 37mA, improving the overall system efficiency and providing extra voltage headroom to compensate for tolerances of LED forward voltage and supply voltage.

The BCR431U also integrates a smart temperature controlling circuit, which reduces the LED current when the junction temperature is very high.

Features

Supply voltage from 6V to 42V
Controls up to 36.5mA LED current
LED current can be adjusted by R_set functionality
Maximum 200mV saturation voltage at 32.8mA
105mV saturation voltage at 15mA (typical)

LED current precision ±10% over the whole current range
Smart over-temperature protection function
Compact PG-SOT23-6 package
Qualified for industrial applications according to the relevant tests of JEDEC47/20/22

Applications

LED strips and modules
Architectural lighting
LED displays and channel letters

Emergency lighting
Retail lighting
White good lighting

Documents

Datasheet
Product Brief

Application Note: Operation, Design Guide, and Performance
Product Qualification Report

Typical Application Circuit

Application Circuit Diagram - Infineon Technologies BCR431U Linear Low Voltage Drop LED Driver

Package Outline

Mechanical Drawing - Infineon Technologies BCR431U Linear Low Voltage Drop LED Driver

Infineon Power and Sensing Selection Guide