LNK3312D-TL

AC DC Converters, Offline Switchers Overview

The LNK3312D-TL is a LinkSwitch-4 AC/DC converter IC designed for offline switcher applications. It integrates a 725 V power MOSFET, oscillator, and high-voltage switched current source for self-biasing. The device supports buck, buck-boost, and flyback topologies with selectable current limits. Operating frequencies range from 62 kHz to 70 kHz. Input voltage spans 85 V to 265 VAC. Output currents reach up to 98 mA in MDCM and 160 mA in CCM. It operates within a temperature range of -40 °C to 150 °C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 725 V power MOSFET with frequency jittering for EMI reduction
• Supports multiple topologies including buck, buck-boost, and flyback configurations
• Features selectable device current limit for optimized performance
• Includes X-capacitor discharge capability for safety compliance

AC DC Converters, Offline Switchers Applications

• Buck topology AC/DC converters
• Buck-boost topology AC/DC converters
• Flyback topology AC/DC converters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'TL' indicates tape and reel packaging when ordering. Confirm the component status as active or end-of-life through official Power Integrations channels before finalizing procurement plans. Ensure compatibility with existing design specifications regarding thermal management and electrical parameters.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring integrated power switching in compact form factors. Consider the 725 V breakdown voltage for high-voltage isolation requirements. Evaluate the selectable current limit feature against load regulation needs. Verify support for required output topologies such as buck or flyback during the initial design phase.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LinkSwitch-4 family from Power Integrations. The series focuses on cost-effective solutions for low-power offline converters. It combines controller and power MOSFET functions into a single package. This integration reduces external component count and board space compared to discrete solutions.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct substitutes within the LinkSwitch-4 family with similar voltage ratings. Verify pinout compatibility if replacing with other SO-8C packages. Confirm equivalent current handling capabilities for the target application load.