LNK4023D-TL

AC DC Converters, Offline Switchers Overview

The LNK4023D-TL is an offline switcher from the LinkSwitch-III family, integrating a high-voltage power MOSFET and control circuitry into a single CMOS chip. Designed for universal input AC/DC converters, it supports flyback topologies with output powers up to 15 W. The device features a fixed switching frequency of 132 kHz, enabling compact transformer designs. It incorporates proprietary Cycle-by-Cycle Current Limiting (CCCL) and operates within a junction temperature range of -40°C to +150°C. The component utilizes an 8-SOIC package with a thermal pad for efficient heat dissipation.

AC DC Converters, Offline Switchers Feature Summary

• Integrates high-voltage power MOSFET and control logic on a single CMOS chip
• Proprietary Cycle-by-Cycle Current Limiting (CCCL) for robust fault protection
• Fixed 132 kHz switching frequency reduces passive component size
• Supports operation at elevated junction temperatures up to 150°C

AC DC Converters, Offline Switchers Applications

• Universal input AC/DC adapters
• Offline flyback power supplies
• Battery chargers
• Consumer electronics power stages

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'TL' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer is Power Integrations to ensure genuine components. Check datasheets for updated RoHS compliance status and lead-free specifications before finalizing procurement orders.

AC DC Converters, Offline Switchers Selection Notes

Select this part for applications requiring integrated protection without external sense resistors. The CCCL feature simplifies design by eliminating current-sensing components. Ensure the required output power remains within the 15 W limit for optimal efficiency and thermal performance in standard operating environments.

AC DC Converters, Offline Switchers Part Context

This component belongs to the LinkSwitch-III family, which targets low-cost, high-performance offline power supplies. Unlike previous generations, it integrates advanced protection mechanisms directly onto the die. The family is designed to minimize external component count while maintaining reliability in consumer and industrial power conversion applications.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official substitution guides for compatible LinkSwitch-III variants. Verify pinout compatibility and thermal characteristics when considering alternatives. Do not assume functional equivalence with other families without verifying electrical parameters.