TEA1521T/N2,518

AC DC Converters, Offline Switchers Overview

The TEA1521T/N2,518 is a Switched Mode Power Supply (SMPS) controller IC from the STARplug family by NXP Semiconductors. It operates directly from rectified universal mains voltage without requiring an auxiliary winding. The device supports Flyback topology and features a high-voltage breakdown capability of 650V. Key electrical parameters include a supply voltage range of 7.5 V to 40 V and a startup voltage of 9.5V. Packaged in a 14-SOIC case, it is designed for low-power systems.

AC DC Converters, Offline Switchers Feature Summary

• Operates directly from rectified universal mains input
• Integrated high-voltage current source for startup
• Designed for flyback converter topologies
• Optimized for low-power switched mode applications

AC DC Converters, Offline Switchers Applications

• Low-power AC/DC power supplies
• Universal mains operated electronic devices
• Flyback converter implementations
• Standby power circuits for consumer electronics

AC DC Converters, Offline Switchers Procurement Notes

This component is officially listed as No Longer Manufactured by NXP Semiconductors. Verification of availability should focus on surplus or obsolete stock channels rather than direct manufacturer distribution. Confirm package integrity and authenticity when sourcing from third-party distributors due to its discontinued status.

AC DC Converters, Offline Switchers Selection Notes

Select this part for designs requiring direct mains operation without auxiliary windings. Ensure compatibility with flyback topology requirements. Verify that the 650V breakdown voltage meets insulation standards. Consider alternative components if new production volume is required, as this specific part number is discontinued.

AC DC Converters, Offline Switchers Part Context

The TEA1521T belongs to the TEA152x STARplug family, which integrates control functions into a single chip for simplified design. It eliminates the need for external biasing circuits by drawing power directly from the rectified mains line. This integration reduces component count and board space in low-power offline applications.

AC DC Converters, Offline Switchers Replacement Considerations

As the TEA1521T/N2,518 is discontinued, verify functional equivalents within the same STARplug family or other NXP offline controllers. Check pinout compatibility and electrical specifications such as startup voltage and breakdown limits before substitution.