LNK6773K-TL

AC DC Converters, Offline Switchers Overview

The LNK6773K-TL is a LinkSwitch-HP series offline switcher IC from Power Integrations, designed for high-efficiency AC/DC conversion. It integrates a 725 V power MOSFET with a primary-side regulation controller in an eSOP-12B package. The device supports flyback topology with a switching frequency of 132 kHz and a maximum duty cycle of 66%. It operates within an input voltage range of 85 VAC to 265 VAC. The component delivers up to 21 W at 85-265 VAC and 35 W at 230 VAC. It features a typical operating supply current of 900 µA and functions reliably across a temperature range of -40°C to +125°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 725 V power MOSFET with primary-side regulation for simplified design
• Provides precise constant voltage regulation with +/-5% accuracy
• Features EcoSmart technology for high efficiency and low no-load power consumption
• Includes comprehensive protection mechanisms such as output overvoltage and thermal shutdown

AC DC Converters, Offline Switchers Applications

• LCD monitors and televisions
• External adapters and chargers
• Embedded power supplies for set-top boxes and DVD players
• General-purpose appliances
• Industrial control systems

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'K' corresponds to the eSOP-12B surface-mount package variant rather than through-hole options. Confirm that the 'TL' suffix indicates tape-and-reel packaging suitable for automated assembly processes. Ensure compliance with RoHS standards and lead-free requirements by checking the latest manufacturer documentation before finalizing procurement specifications.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high power density and strict voltage regulation without secondary feedback components. The integrated 725 V MOSFET allows for robust derating margins. Consider the 132 kHz switching frequency for balancing transformer size against electromagnetic interference filtering requirements. Evaluate the thermal performance within the eSOP-12B package for the target power level.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LinkSwitch-HP family, which targets high-power applications compared to standard LinkSwitch-II devices. The K suffix distinguishes it from other package variants like the through-hole eDIP-12B version. It represents an evolution in the LinkSwitch line, offering improved overload power compensation and faster AC reset capabilities for enhanced system reliability.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitutes include other LinkSwitch-HP devices with compatible pinouts and electrical ratings, such as the LNK6777K. Verify that any replacement maintains the same 725 V breakdown voltage and eSOP-12B footprint to ensure mechanical compatibility.