LNK409EG

LED Driver IC Overview

The LNK409EG is a LinkSwitch-PH series integrated switcher designed for high-performance, non-isolated offline LED driver applications. It combines a high-voltage power MOSFET with an intelligent controller to deliver up to 25W of output power. The device supports driving LED strings up to 72V at 350mA from an input voltage range of 180 VAC to 265 VAC. It utilizes proprietary FluxLink technology for precise secondary-side control without optocouplers, ensuring high efficiency and reliability in compact lighting designs.

LED Driver IC Feature Summary

• Integrates primary-side control, high-voltage switching, and secondary-side regulation into a single package
• Utilizes FluxLink technology for accurate current regulation and feedback without requiring optocouplers
• Supports non-isolated topologies suitable for compact LED lighting form factors

LED Driver IC Applications

• Non-isolated offline LED drivers
• Compact smart LED lighting fixtures
• High-density general illumination systems

LED Driver IC Procurement Notes

Verify the specific suffix (e.g., EG) against the manufacturer's official datasheet to confirm pinout compatibility and thermal specifications. Ensure that the selected component matches the required insulation class and safety certifications for the target market. Cross-reference the ordering information with authorized distributors to confirm availability and lot traceability before finalizing procurement plans.

LED Driver IC Selection Notes

Select this component when designing non-isolated LED drivers requiring high power density and simplified bill of materials. The integrated nature of the device reduces external component count compared to discrete solutions. Consider the maximum output voltage capability and current limits to ensure the LED string configuration aligns with the IC's operational parameters within the specified AC input range.

LED Driver IC Part Context

The LNK409EG belongs to the LinkSwitch-PH family from Power Integrations, engineered for premium performance in LED lighting. This series distinguishes itself by integrating advanced control algorithms with robust power switching capabilities. It serves as a core solution for manufacturers aiming to reduce system size while maintaining high efficiency and compliance with global energy standards.

LED Driver IC Replacement Considerations

No direct pin-to-pin replacement is confirmed in public documentation. Alternative selections may require schematic redesign due to differences in integration levels or control architectures.