APR34309MPTR-G1

Power Supply Controllers, Monitors Overview

The APR34309MPTR-G1 is a secondary side controller for AC/DC converters, specifically designed for synchronous rectification. It operates within a supply voltage range of 3.3 V to 6 V and draws a typical operating current of 55 µA. The device supports a maximum duty cycle of 18% and functions reliably across an extended temperature range from -40°C to +85°C. Packaged in an 8-SO-EP surface-mount format with exposed pad, it integrates high-voltage startup circuitry and precision sensing for efficient power management in flyback topologies.

Power Supply Controllers, Monitors Feature Summary

• Integrated synchronous rectifier control optimized for secondary side applications
• High-voltage startup mechanism enabling operation without auxiliary winding
• Precision current sensing for accurate load regulation and protection
• Low quiescent current design enhancing overall system efficiency

Power Supply Controllers, Monitors Applications

• Secondary side control in flyback AC/DC converter designs
• Synchronous rectification in offline power supplies
• Adapter and charger circuits requiring high efficiency
• General purpose isolated DC/DC conversion systems

Power Supply Controllers, Monitors Procurement Notes

Verify the complete part number including the suffix against official Diodes Incorporated documentation to ensure correct packaging and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to assembly. Cross-reference the specific ordering code with manufacturer datasheets to validate pinout and thermal pad configuration for PCB layout compatibility.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring dedicated synchronous rectification control in flyback architectures. Ensure the input supply voltage remains within the 3.3 V to 6 V operational window during startup and steady-state conditions. Evaluate thermal performance based on the SO-8EP package characteristics and ambient operating temperatures ranging from -40°C to +85°C. Verify compatibility with the transformer turns ratio and sensing resistor values for optimal rectifier timing.

Power Supply Controllers, Monitors Part Context

This component belongs to the APR34309 series of power management ICs manufactured by Diodes Incorporated. It falls under the category of PMIC - Power Controllers, specifically targeting secondary side synchronization. The series is engineered for offline switch-mode power supplies, providing a specialized solution for improving efficiency in consumer electronics and industrial adapter applications through active rectifier control.

Power Supply Controllers, Monitors Replacement Considerations

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