TEA1723FT/N1,118

Overview

The TEA1723FT/N1,118 is an offline switch controller from NXP Semiconductors designed for flyback converter topologies. It operates within a switching frequency range of 53 kHz to 78 kHz and supports a maximum duty cycle of 78%. The device features an internal high-voltage startup circuit and functions with input voltages between 15 V and 19 V. Packaged in a compact 7-SOIC format, it integrates protection mechanisms including overvoltage, overtemperature, and short-circuit safeguards.

Feature Summary

• Integrates a high-voltage startup circuit enabling direct connection to the main rectified line without external bias windings
• Supports variable frequency operation to optimize efficiency across varying load conditions
• Includes comprehensive protection features such as overvoltage, overtemperature, and short-circuit detection

Applications

• Offline AC-DC power supplies
• Flyback converter designs
• Low-power adapter applications

Procurement Notes

Verify the complete part number including the suffix /N1,118 to ensure correct packaging and RoHS compliance. Confirm that the required quantity aligns with the manufacturer's standard shipping units. Cross-reference the datasheet revision to ensure compatibility with specific design requirements before finalizing procurement orders.

Selection Notes

Select this component for flyback applications requiring integrated startup functionality and variable frequency control. Ensure the design accommodates the specified 15 V to 19 V operating range. Verify that the 7-SOIC package dimensions fit the target PCB layout constraints. Consider thermal management strategies given the integrated protection thresholds.

Part Context

This component belongs to the TEA172x GreenChip family of low-power SMPS controllers. These devices are engineered for high efficiency in offline power conversion applications. The series emphasizes reduced standby power consumption and simplified design implementation through integrated features.

Replacement Considerations

Consult official substitution lists for compatible alternatives within the TEA172x family or equivalent NXP controllers. Verify pinout compatibility and electrical parameter alignment before replacing.