BD4839FVE-TR

Overview

The BD4839FVE-TR is a high-voltage LED driver IC designed for automotive applications, manufactured by Rohm Semiconductor. It integrates a constant current control circuit capable of driving multiple LEDs in series configurations. The device supports input voltages up to 55V and provides precise current regulation with low ripple. Key electrical parameters include an operating voltage range of 6V to 55V, output current accuracy within ±10%, and a switching frequency typically around 200kHz. It features built-in protection mechanisms such as over-current, open-load, and short-circuit detection, ensuring reliable operation in harsh automotive environments.

Feature Summary

• Integrates constant current control for stable LED brightness
• Supports high-voltage input suitable for automotive systems
• Includes comprehensive protection functions for safety

Applications

• Automotive headlight modules
• Daytime running light (DRL) circuits
• Interior ambient lighting systems

Procurement Notes

Verify the exact part number suffix against official Rohm documentation to ensure correct packaging and tape/reel specifications. Confirm that the requested variant matches the required thermal performance and pinout configuration for your specific PCB layout. Cross-reference the datasheet revision date to ensure compatibility with latest design guidelines.

Selection Notes

Select this component when designing automotive lighting systems requiring high-voltage tolerance and integrated protection. Ensure the thermal management solution aligns with the package's power dissipation capabilities. Verify that the input voltage range covers the vehicle's nominal and transient voltage conditions.

Part Context

This IC belongs to Rohm's automotive-grade LED driver family, optimized for reliability under extreme temperature and voltage fluctuations. It is engineered to meet stringent automotive standards, offering a compact solution for replacing discrete LED driver designs. The FVE package facilitates efficient heat dissipation and easy integration into space-constrained automotive boards.

Replacement Considerations

Check for direct cross-references from other manufacturers like ON Semiconductor or Texas Instruments if supply constraints exist. Ensure any substitute maintains the same voltage rating, current accuracy, and protection features. Verify pin-to-pin compatibility before finalizing any replacement strategy.