AP3785TAMTR-G1

Overview

The AP3785TAMTR-G1 is a primary side controller for AC/DC converters, part of the Gen3 Continuous Conduction Mode (CCM) family. It operates with a fixed switching frequency of 80 kHz and supports an output current of 20.5 mA. The device functions within a supply voltage range of 5.2 V to 6.3 V, with a startup threshold at 5.5 V. It features low operating supply current of 450 uA and withstands temperatures from -40°C to +150°C. Packaged in SOIC-8, it provides non-isolated power conversion capabilities.

Feature Summary

• Integrates primary side control for continuous conduction mode flyback topologies
• Includes built-in protection mechanisms against overvoltage, overtemperature, and short circuits
• Utilizes proprietary noise elimination technology to suppress audible acoustic emissions

Applications

• Offline flyback power supplies
• AC/DC converter designs requiring primary side regulation
• Consumer electronics power adapters

Procurement Notes

Verify the complete part number including suffixes such as G1 for RoHS compliance before ordering. Confirm package type is SOIC-8 and ensure compatibility with your PCB footprint. Check datasheet revisions for any recent assembly or test site changes that may affect qualification. Validate electrical parameters against your specific design requirements.

Selection Notes

Select this component for applications requiring primary side regulation without optocouplers. Ensure the design accommodates the 80 kHz switching frequency and 20.5 mA output capability. Verify thermal management strategies for the +150°C maximum junction temperature rating. Consider the non-isolated nature of the internal control loop relative to system safety standards.

Part Context

This component belongs to the AP3785 series of AC/DC controllers manufactured by Diodes Incorporated. It is designed for cost-effective offline power solutions using CCM flyback topology. The series emphasizes high efficiency and reduced standby power consumption through advanced control algorithms.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.