LNK6424D

AC DC Converters, Offline Switchers Overview

The LNK6424D is a LinkSwitch-3 family AC/DC converter IC designed for low-power applications. It integrates a 700 V power MOSFET with an ON/OFF controller, self-bias circuit, and protection features. The device supports universal input voltages from 85 to 265 VAC. It provides constant voltage (CV) and constant current (CC) regulation without requiring optocouplers or secondary control circuits. Key electrical parameters include a maximum output power of 3.5 W at 85–265 VAC input. The package type is SOIC-8.

AC DC Converters, Offline Switchers Feature Summary

• Integrates high-voltage power MOSFET and ON/OFF controller in a single package
• Eliminates need for optocouplers and secondary side control circuits
• Features self-bias supply to simplify transformer design
• Includes frequency jittering to reduce EMI filtering costs

AC DC Converters, Offline Switchers Applications

• Low power AC/DC converters
• Universal input adapters
• Standby power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'D' against official Power Integrations documentation to confirm pinout and thermal characteristics. Ensure the component meets RoHS compliance requirements for your target market. Confirm that the SOIC-8 package aligns with your PCB footprint and assembly capabilities. Cross-reference the datasheet revision date to ensure all latest electrical specifications are considered during integration.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring simplified topology and reduced bill of materials. It is suitable for applications where cost-effective isolation and basic regulation are prioritized over high precision. Consider the thermal performance within the SOIC-8 package when determining heat dissipation strategies. Evaluate system efficiency requirements against the device's inherent switching characteristics.

AC DC Converters, Offline Switchers Part Context

The LNK6424D belongs to the LinkSwitch-3 series by Power Integrations. This family focuses on energy-efficient, low-pin-count solutions for offline switchers. It represents a step up in power capability compared to earlier TinySwitch generations while maintaining similar integration levels. The series is widely used in consumer electronics and industrial auxiliary power supplies.

AC DC Converters, Offline Switchers Replacement Considerations

Check for LNK642x variants within the same LinkSwitch-3 family for potential substitutes with different power ratings or pin configurations. Verify compatibility with existing transformer designs if swapping between models.