BP5843A

Overview

The BP5843A is a high-power LED driver IC designed for illumination applications with AC100V input and constant current output. It integrates a power MOSFET and supports dimming control via an external resistor or PWM signal. The device features built-in protection mechanisms including open/short detection, overvoltage, and thermal shutdown to ensure reliable operation in lighting systems.

Feature Summary

• Integrated power MOSFET for compact design
• Supports resistor-based and PWM dimming control
• Built-in fault detection for open and short circuits
• Thermal shutdown protection for safety

Applications

• AC-powered LED street lighting fixtures
• High-power LED downlights
• Industrial LED panel lights
• Commercial LED floodlights

Procurement Notes

Verify the specific suffix (e.g., TR) for tape-and-reel packaging requirements against your assembly line specifications. Confirm RoHS compliance status through the official datasheet as regulatory standards may vary by region. Ensure the ordering part number matches the exact package type required for your PCB footprint to avoid compatibility issues during procurement.

Selection Notes

Select this component for applications requiring direct AC mains connection without bulky transformers. Evaluate the thermal management capabilities of your PCB layout, as the integrated MOSFET dissipates significant heat. Compare pinout compatibility with existing designs if replacing legacy drivers, ensuring voltage ratings match the local AC supply network.

Part Context

This part belongs to ROHM's BP584x series of high-power LED drivers. These components are engineered for efficiency in single-stage AC-DC conversion. The series targets cost-sensitive yet high-performance lighting markets, offering integration that reduces external component count compared to discrete solutions.

Replacement Considerations

BP5842A: Similar specification, same package.