U643B-MFPG3

Lighting, Ballast Controllers Overview

The U643B-MFPG3 is an automotive-grade LED lighting driver IC designed for flasher control applications. Manufactured by Microchip Technology, this component integrates a precision timer and shunt resistor to manage LED flashing sequences without external timing components. It operates within a temperature range of -40°C to +105°C and is housed in an 8-SOIC surface-mount package. The device supports frequency doubling disable functionality and is classified as a discontinued product.

Lighting, Ballast Controllers Feature Summary

• Integrated flasher controller with built-in shunt resistor for simplified circuit design
• Automotive qualification suitable for harsh environmental conditions
• Surface-mount 8-SOIC packaging for compact board integration

Lighting, Ballast Controllers Applications

• Automotive exterior LED lighting systems
• LED turn signal flasher circuits
• Automotive hazard light controllers

Lighting, Ballast Controllers Procurement Notes

This component is officially listed as End-of-Life (EOL) by the manufacturer. Availability is limited to existing stock or secondary market sources. Verify authenticity carefully due to potential obsolescence risks. Confirm package integrity and pin compatibility before procurement. No new production units are expected from Microchip Technology.

Lighting, Ballast Controllers Selection Notes

Select this part only if legacy automotive designs require its specific integrated shunt and flasher logic. Evaluate alternative modern LED drivers for new projects due to EOL status. Ensure voltage and current requirements match the target LED load. Consider redesigning with active substitutes to secure long-term supply chain stability.

Lighting, Ballast Controllers Part Context

The U643B series belongs to Microchip's portfolio of specialized LED lighting driver ICs. This specific model targets automotive flasher applications, replacing discrete transistor-based solutions. It simplifies design by combining timing and power switching functions into a single low-power package.

Lighting, Ballast Controllers Replacement Considerations

Public confirmed substitute part numbers: U643B-MFP, U643B-M.