LNK3773D-H004-TL

AC DC Converters, Offline Switchers Overview

The LNK3773D-H004-TL is a high-efficiency off-line constant voltage flyback switcher IC from Power Integrations. It integrates a 725 V / 900 V primary MOSFET and supports synchronous rectification for improved efficiency. The device operates with a switching frequency of 66 kHz and utilizes a 16-SO B package. It is designed for AC/DC converter applications, supporting an input voltage range of 85-265 VAC and delivering up to 12 W output power.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage primary MOSFET rated at 725 V or 900 V.
• Supports synchronous rectification to enhance conversion efficiency.
• Features low no-load power consumption capabilities.

AC DC Converters, Offline Switchers Applications

• Off-line flyback AC/DC converters
• Low power adapter designs
• Constant voltage power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (e.g., -TL) against official datasheets to confirm packaging type, such as tape and reel. Ensure the component matches the required voltage rating and pinout configuration for your PCB layout. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status if required by your manufacturing standards.

AC DC Converters, Offline Switchers Selection Notes

Select this IC for applications requiring high efficiency in low-power offline converters. The integrated MOSFET simplifies design by reducing external component count. Consider the 66 kHz switching frequency for EMI management. Verify that the 16-SO B package fits your thermal and spatial constraints. Ensure the synchronous rectification requirement aligns with your target efficiency goals.

AC DC Converters, Offline Switchers Part Context

This component belongs to the LNK3773 family of high-efficiency flyback switchers. It is designed to replace older discrete solutions by integrating the primary switch and control logic. The family focuses on reducing system cost and size while maintaining high performance in consumer and industrial power supply applications.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct substitutes within the same family, such as LNK3773D-H003-TL or LNK3773D-H006-TL, which may offer different output power ratings or voltage specifications. Ensure pin compatibility and thermal performance are comparable before substitution.

AC DC Converters, Offline Switchers FAQ

What is the switching frequency of the LNK3773D-H004-TL?

The device operates at a fixed switching frequency of 66 kHz.

Does the LNK3773D-H004-TL support synchronous rectification?

Yes, the IC is designed to support synchronous rectification for improved efficiency.