AP3127HKTR-G1

Overview

The AP3127HKTR-G1 is an AC/DC PWM controller designed for offline flyback converter topologies. It operates with a fixed switching frequency of 100 kHz and supports a supply voltage range from 10 V to 28 V, with a startup threshold at 15.8 V. The device integrates a driver capable of delivering 350 mA output current and handles a maximum power dissipation of 500 mW. It features a duty cycle limit of 75% and includes comprehensive protection mechanisms such as overvoltage, overload, and current limiting. The component is housed in a SOT-26 package and functions within a junction temperature range of -40°C to 150°C.

Feature Summary

• Integrates high-current driver capability for efficient gate drive performance
• Includes built-in protection against overvoltage, overload, and current faults
• Supports isolated flyback topology with fixed frequency operation

Applications

• Offline AC/DC power supplies
• Flyback converter designs
• General purpose power management circuits

Procurement Notes

Verify the End-of-Life status before design finalization, as the manufacturer has indicated discontinuation. Confirm that the SOT-26 package footprint matches your PCB layout requirements. Ensure the 100 kHz switching frequency aligns with your transformer specifications. Check for updated environmental compliance documentation prior to procurement.

Selection Notes

Select this component for applications requiring a simple, cost-effective offline solution with integrated protection. The fixed 100 kHz frequency simplifies magnetic component selection. Verify that the 350 mA drive current meets the gate charge requirements of your external MOSFETs. Consider the thermal constraints associated with the 500 mW power dissipation rating in your enclosure design.

Part Context

This part belongs to the AP3127 series of PWM controllers from Diodes Incorporated. It is specifically engineered for low-power offline applications using the flyback topology. The series focuses on providing essential control functions with minimal external components, targeting consumer electronics and adapter markets where space and cost efficiency are critical.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the End-of-Life status, alternative sourcing should focus on verifying pin-compatible devices or redesigning with currently active inventory.