LNK6418E

AC DC Converters, Offline Switchers Overview

The LNK6418E is a high-performance, single-stage AC-DC controller from the LinkSwitch-III family by Power Integrations. It integrates a 700 V power MOSFET with a primary-side regulated controller for offline flyback converters. The device operates at a fixed switching frequency of 132 kHz and supports universal input voltages ranging from 85 VAC to 265 VAC. It provides constant voltage regulation with tight tolerance and includes comprehensive protection features such as overvoltage, overcurrent, and thermal shutdown.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V power MOSFET with a primary-side regulated controller in a single package
• Supports universal AC input voltage range from 85 VAC to 265 VAC
• Operates at a fixed switching frequency of 132 kHz for optimized magnetics size
• Includes built-in overvoltage, overcurrent, and thermal shutdown protection

AC DC Converters, Offline Switchers Applications

• Universal input adapters
• Standby power supplies
• Battery chargers
• General-purpose offline power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (E) indicates the tape and reel packaging option when ordering. Confirm the manufacturer is Power Integrations to ensure authenticity. Check for RoHS compliance status if required for your manufacturing process. Ensure the component matches the exact part number to avoid pinout or electrical specification mismatches.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high integration and reduced bill of materials. It is suitable for applications needing primary-side regulation without optocouplers. Consider the 132 kHz frequency for balancing efficiency and component size. Evaluate the thermal performance requirements based on the expected load conditions.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LinkSwitch-III family, designed for cost-effective and compact offline power supply solutions. It replaces older discrete solutions by combining power and control functions. The family is known for its reliability and ease of design implementation in consumer electronics and industrial equipment.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct replacements within the LinkSwitch-III series with similar voltage ratings and current capabilities. Verify compatibility with existing PCB layouts and magnetic components when substituting.