TEA1731TS/1Z

Overview

The TEA1731TS/1Z is a switched-mode power supply controller IC designed for flyback topologies. It operates in peak current and frequency control mode with an integrated slope compensation for continuous conduction mode operation. The device supports a switching frequency range of 27.5 kHz to 82 kHz and features a maximum duty cycle of 80%. It delivers up to 75 W output power with a typical operating supply current of 620 uA. The component functions within a temperature range of -40°C to +150°C and utilizes a TSOP-6 surface-mount package.

Feature Summary

• Integrates overpower protection (OPP) with internal time-out capabilities to handle overload situations safely.
• Employs frequency jitter to reduce electromagnetic interference (EMI) during fixed frequency operation.
• Features dynamic frequency reduction at low and medium power levels to maintain high efficiency across the load range.
• Includes integrated overvoltage protection (OVP) on the VCC pin for enhanced system reliability.

Applications

• Low-cost switched-mode power supplies
• Flyback converter designs
• Power supplies requiring high efficiency over total load ranges

Procurement Notes

Verify the specific suffix '1Z' against the manufacturer's official documentation to confirm compliance status and revision level. Ensure that the TSOP-6 package dimensions match your PCB footprint requirements. Cross-reference the RoHS details provided in the datasheet to meet environmental regulations. Confirm availability through authorized distributors as production cycles may vary.

Selection Notes

Select this controller for applications requiring a balance between cost-efficiency and performance in flyback architectures. It is suitable for designs needing integrated EMI reduction without external complex filtering. Consider its wide operating temperature range for industrial or automotive environments. Evaluate the 75 W power limit to ensure it aligns with your target output specifications.

Part Context

This component belongs to the TEA173X GreenChip series from NXP Semiconductors. The series focuses on providing highly efficient, low-cost power management solutions. These controllers are engineered to simplify design processes by minimizing external component counts while maintaining robust protection features and high efficiency standards.

Replacement Considerations

Consult official substitution lists for compatible alternatives within the TEA173X family. Verify pin compatibility and electrical parameters before replacing. No direct public substitute part numbers are confirmed in the available data.