BCR431UXTSA1

Overview

The BCR431UXTSA1 is a linear LED driver IC from Infineon Technologies, housed in a PG-SOT23-6 package. It operates with a supply voltage range of 6 V to 42 V and delivers a maximum output current of 43 mA. The device features an ultra-low voltage drop of 0.135 V, enabling efficient operation when supply and forward voltages are close. It supports PWM dimming via the RS pin and is rated for industrial quality with a power dissipation of 600 mW.

Feature Summary

• Ultra-low voltage drop design for high efficiency in low headroom applications
• Integrated constant current regulation without external power transistors
• Supports PWM dimming interface for flicker-free light control

Applications

• Signage lighting
• LED strip lighting
• Automotive interior lighting
• Emergency lighting systems

Procurement Notes

Verify the specific suffix XTSA1 to confirm reel packaging and industrial qualification grade. Ensure the ordering part number matches the required voltage and current specifications for the target application. Cross-reference datasheet revisions to confirm compatibility with existing designs.

Selection Notes

Select this component for space-constrained designs requiring minimal external components. It is suitable for driving LEDs where the supply voltage closely matches the LED forward voltage due to its low dropout characteristic. Consider the 600 mW power dissipation limit when designing thermal management solutions.

Part Context

This part belongs to the BCR family of linear LED drivers, designed for compact PCB layouts. It complements other BCR series devices by offering specific current ratings and voltage ranges tailored for commercial and automotive lighting applications requiring reliable constant current performance.

Replacement Considerations

Check for direct substitutes within the BCR430U or BCR431 series that match the 43 mA output current and PG-SOT23-6 package. Verify pinout compatibility and electrical parameters before substitution.