LNK6779E

AC DC Converters, Offline Switchers Overview

The LNK6779E is a LinkSwitch-HP series offline switcher IC designed for high-power flyback applications. It integrates a controller and a 725V power MOSFET in an eSIP-7C package. The device supports primary side regulation (PSR) with continuous conduction mode (CCM). It operates at switching frequencies between 120kHz and 136kHz. The component provides up to 39W output at 85-265 VAC input, or 54W at 230 VAC input. It features built-in protection against overvoltage, overload, and short circuits.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 725V power MOSFET and PSR controller in a single package
• Supports continuous conduction mode (CCM) operation for high efficiency
• Includes programmable current limit and shutdown delay options
• Features enhanced thermal shutdown and line surge withstand capability

AC DC Converters, Offline Switchers Applications

• Home appliances requiring isolated flyback power supplies
• LCD monitors and television sets
• Embedded power systems such as DVD players and set-top boxes
• Industrial power supply designs

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'E' indicates the eSIP-7C through-hole package variant when sourcing. Confirm that the manufacturer's datasheet explicitly lists the LNK6779E part number within the LinkSwitch-HP family specifications. Ensure the procurement channel provides official documentation matching the requested component details to avoid substitution errors.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high power density and strict CV regulation without secondary side feedback components. The integrated 725V MOSFET simplifies design margins compared to lower voltage alternatives. Consider the eSIP-7C package for applications needing robust thermal management via heatsink mounting on the exposed pad.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LinkSwitch-HP family from Power Integrations. The series utilizes advanced analog control schemes to achieve CCM operation up to 90W. It replaces older DCM-based solutions to improve efficiency and reduce audible noise. The family includes variants like LNK6776E and LNK6778E with different power ratings.

AC DC Converters, Offline Switchers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.