LNK404LG

LED Driver IC Overview

The LNK404LG is a high-voltage AC-DC converter from the LinkSwitch-TN2 family, designed for offline flyback applications. It integrates a 700 V power MOSFET and operates at a switching frequency of 66 kHz. The device supports an input voltage range of 85 VAC to 265 VAC. It provides constant current output capability with a maximum output current of 120 mA. The component is housed in a DIP-7 package and features a thermal shutdown circuit for protection.

LED Driver IC Feature Summary

• Integrates a 700 V power MOSFET within a single compact package
• Provides constant current regulation suitable for LED lighting applications
• Includes internal thermal shutdown for enhanced reliability

LED Driver IC Applications

• Offline LED driver circuits
• General purpose isolated power supplies
• Battery chargers

LED Driver IC Procurement Notes

Verify the specific suffix 'L' indicates tape and reel packaging rather than bulk shipping when placing orders. Confirm that the DIP-7 package matches your PCB footprint requirements. Ensure the design accounts for the 66 kHz switching frequency during electromagnetic interference filtering.

LED Driver IC Selection Notes

Select this component for low-power applications requiring integrated constant current control. It is suitable where board space is limited due to its monolithic integration. Consider the 700 V breakdown voltage for standard universal input designs without additional high-voltage components.

LED Driver IC Part Context

This part belongs to the LinkSwitch-TN2 family, which targets cost-sensitive, low-power offline converters. It simplifies design by combining controller, oscillator, and high-voltage switch into one unit. The family is known for eliminating external bias winding components.

LED Driver IC Replacement Considerations

Check for LNK404PN as a potential pin-compatible alternative if different packaging is required.