LNK3771D-H003-TL

AC DC Converters, Offline Switchers Overview

The LNK3771D-H003-TL is a LinkSwitch-XT2SR series AC/DC converter IC designed for high-efficiency off-line flyback applications. It integrates a 900 V primary MOSFET and supports synchronous rectification to minimize component count. The device operates with an input voltage range of 85 VAC to 484 VAC, delivering up to 10 W of output power. Key electrical characteristics include a switching frequency of 66 kHz and operation at ambient temperatures up to 50°C. It achieves low no-load power consumption of less than 5 mW and maintains efficiency above 87% under full load conditions.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage primary MOSFET with synchronous rectification drive capability
• Features built-in low-dropout regulator (LDO) for internal core and external supply
• Provides comprehensive protection mechanisms including over-temperature and over-voltage safeguards
• Optimized for compact designs with minimal external passive components

AC DC Converters, Offline Switchers Applications

• Compact AC/DC power supplies
• Low-power adapter designs
• Stand-alone offline converters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix H003 against the manufacturer's official datasheet to confirm pinout and functional compatibility. Ensure the reel packaging quantity aligns with production requirements. Cross-reference the RoHS compliance status directly with the latest product specification document before finalizing procurement decisions.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high integration in small form factors. It is suitable for applications needing low standby power and high efficiency across wide input voltage ranges. Consider the thermal performance constraints when designing PCB layouts, as the device relies on board-level heat dissipation rather than external heatsinks.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LinkSwitch-XT2SR family from Power Integrations. These devices are engineered to replace traditional discrete solutions by integrating the controller, power switch, and protection features into a single package. The series focuses on reducing bill-of-materials costs while maintaining high reliability in consumer and industrial power supply applications.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official substitution guides for compatible LinkSwitch-XT variants. Verify that alternative parts support the required 900 V rating and synchronous rectification functionality. Ensure pin compatibility and thermal characteristics match the existing design constraints.