LNK500GN

AC DC Converters, Offline Switchers Overview

The LNK500GN is an offline switcher from the LinkSwitch family, designed for cost-sensitive AC/DC converters. It integrates a 700 V power MOSFET and control circuitry in an 8-pin DIP or SMD package. The device supports universal input voltages ranging from 85 VAC to 265 VAC. It provides constant voltage regulation with a tolerance of ±25%. The integrated controller includes high-voltage current source startup, frequency jittering for EMI reduction, cycle-by-cycle current limiting, and thermal shutdown protection.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V power MOSFET and control logic into a single monolithic chip
• Provides constant voltage output regulation suitable for battery chargers
• Includes built-in thermal shutdown and cycle-by-cycle current limiting for system protection

AC DC Converters, Offline Switchers Applications

• Mobile phone and wireless telephone chargers
• PDA and digital camera power adapters
• MP3 player and portable audio equipment supplies
• Shaver power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (e.g., GN) against the manufacturer's datasheet to confirm pinout and package type. Confirm RoHS compliance status as manufacturing processes may update component specifications over time. Ensure the design accounts for the ±25% CV tolerance if precise voltage regulation is required for the target application.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring a low-cost solution that replaces linear transformers. It is appropriate for systems where a standard CV tolerance is acceptable. Consider the LinkSwitch-5 series for designs requiring higher efficiency or tighter regulation tolerances than this generation provides.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LinkSwitch family of integrated offline switchers. These devices are engineered to minimize external component count by combining the power switch and controller on one die. The family targets low-power adapter applications, offering a compact alternative to traditional discrete flyback designs while maintaining reliability through integrated protection features.

AC DC Converters, Offline Switchers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.