LNK304PNAU

AC DC Converters, Offline Switchers Overview

The LNK304PNAU is an obsolete AC-DC converter from the LinkSwitch-TN family by Power Integrations. It integrates a high-voltage switching MOSFET and control circuitry for off-line flyback applications. The device supports universal input voltages ranging from 85 VAC to 265 VAC. It operates at a fixed switching frequency of 66 kHz with a maximum duty cycle of 72%. Output capabilities include 120 mA in MDCM mode and 170 mA in CCM mode. The component utilizes a PDIP-8 package and functions within a temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power switch and controller for simplified design
• Supports multiple operating modes including MDCM and CCM
• Features fixed frequency operation to minimize EMI filtering requirements

AC DC Converters, Offline Switchers Applications

• Universal input offline flyback converters
• Battery chargers for portable devices
• Standby power supplies for consumer electronics

AC DC Converters, Offline Switchers Procurement Notes

Verify availability carefully as this specific suffix variant is listed as obsolete. Confirm that the standard LNK304PN is suitable for current designs, as it represents the active manufacturing version of the same core technology. Ensure all sourcing channels acknowledge the end-of-life status to prevent supply chain disruptions during production runs.

AC DC Converters, Offline Switchers Selection Notes

Select this component only for legacy system maintenance or repair scenarios where exact pinout compatibility is critical. For new designs, consider the active LNK304PN or newer LinkSwitch-TN series variants which offer updated manufacturing support. Evaluate thermal management requirements given the integrated nature of the switch and control logic within the single package.

AC DC Converters, Offline Switchers Part Context

This part belongs to the LinkSwitch-TN family, designed for lowest component count solutions. It targets cost-sensitive applications requiring reliable performance without external feedback loops. The family emphasizes energy efficiency and robust protection features against over-voltage and over-current conditions inherent in isolated power conversion topologies.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitute: LNK304PN. Verify package compatibility and electrical specifications match before integration.