AP4341SNTR-G1

Overview

The AP4341SNTR-G1 is a primary side regulation (PSR) AC-DC controller designed for flyback converters. It integrates a fast detection circuit and operates at a switching frequency of 33 kHz. The device supports dynamic PSR to maintain regulation without an optocoupler or secondary feedback winding. It is housed in a SOT-23-3 package.

Feature Summary

• Integrates fast detection circuitry for rapid response
• Supports dynamic primary side regulation architecture
• Eliminates need for optocouplers and secondary windings

Applications

• Flyback power supply designs
• Adapter applications requiring primary side regulation
• Cost-sensitive AC-DC conversion systems

Procurement Notes

Verify the specific suffix G1 against the manufacturer datasheet to confirm pinout and electrical specifications match the design requirements. Confirm RoHS3 compliance status with the supplier prior to ordering, as environmental declarations may vary by production batch.

Selection Notes

Select this component for applications prioritizing bill-of-materials reduction through the elimination of secondary feedback components. Ensure the input voltage range and output power requirements align with the capabilities of the integrated PSR control loop and the 33 kHz switching frequency.

Part Context

This part belongs to the AP4341 family of AC-DC controllers from Diodes Incorporated. These devices are engineered to replace traditional optocoupler-based solutions, offering improved reliability and reduced system complexity in low-to-medium power adapter applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing footprints and control loops if considering alternative PSR controllers.