TEA1721FT/N1,118

Overview

The TEA1721FT/N1,118 is an offline flyback switch controller from NXP Semiconductors designed for low-power AC-DC applications. It integrates a high-voltage power MOSFET with a switching frequency range of 22.5kHz to 50.5kHz and supports a maximum duty cycle of 75%. The device operates within a supply voltage range of 8.5V to 35V, features a 700V breakdown voltage, and includes internal protection against overtemperature, overvoltage, and short circuits. It is housed in a 7-SOIC package.

Feature Summary

• Integrates a high-voltage power MOSFET with the controller for compact design
• Includes comprehensive fault protection mechanisms for system reliability
• Supports variable frequency operation to optimize efficiency across load ranges

Applications

• Low-power AC-DC adapters
• Standby power supplies
• Consumer electronics power stages

Procurement Notes

Verify the exact suffix 'N1,118' matches your required packaging and tape-and-reel specifications. Confirm RoHS compliance status and lead times directly with authorized distributors or NXP sales representatives prior to ordering. Ensure the 7-SOIC footprint aligns with your PCB layout constraints.

Selection Notes

Select this component for designs requiring integrated power switching in low-wattage applications. Consider the 700V rating for primary-side isolation requirements. Evaluate the thermal performance within the -40°C to 150°C junction temperature range for your specific enclosure conditions.

Part Context

This part belongs to the TEA172x GreenChip family, which focuses on low-power SMPS controllers. It shares architectural similarities with variants like the TEA1721AT but may differ in specific electrical tolerances or packaging options. The series targets energy-efficient solutions for modern electronic devices.

Replacement Considerations

Consult official substitution lists for electrically compatible alternatives. Verify pinout compatibility and parameter equivalence before replacing.