LNK353PN

AC DC Converters, Offline Switchers Overview

The LNK353PN is an offline switcher from the LinkSwitch-HF family, designed for flyback topology applications. It integrates a 700V power switch and operates at a switching frequency of 200kHz. The device supports a maximum output power of 4W and features a duty cycle of 63%. It includes comprehensive fault protection mechanisms such as current limiting, open-loop detection, over-temperature shutdown, and short-circuit protection. The component is housed in an 8-PDIP-B package with through-hole mounting and functions within a junction temperature range of -40°C to 150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates high-voltage power switch with advanced control logic for simplified design
• Provides multi-mode protection against overload, thermal stress, and circuit faults
• Utilizes fixed-frequency operation to minimize electromagnetic interference

AC DC Converters, Offline Switchers Applications

• Low-power isolated AC/DC converters
• Battery chargers for portable devices
• Standby power supplies for consumer electronics

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity due to discontinued status. Confirm RoHS compliance requirements as the part may not meet current standards. Check for valid replacement options from the manufacturer or authorized distributors. Ensure storage conditions are maintained to prevent degradation of the through-hole package integrity prior to assembly.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring integrated protection in low-power isolated applications. Consider the 700V breakdown voltage for primary-side isolation needs. Evaluate the 8-PDIP-B package for through-hole compatibility. Assess the 200kHz frequency against transformer size constraints. Verify thermal management capabilities within the specified operating temperature range.

AC DC Converters, Offline Switchers Part Context

The LNK353PN belongs to the LinkSwitch-HF series by Power Integrations, targeting cost-sensitive offline power supply designs. This series emphasizes high integration to reduce external component count. The specific model offers a balance of performance and reliability for standard flyback converters, serving as a legacy solution for established industrial and consumer hardware platforms.

AC DC Converters, Offline Switchers Replacement Considerations

Consult official documentation for direct substitutes. Verify pinout compatibility and electrical specifications before transitioning. Ensure the replacement part meets the same isolation and thermal requirements.