AP3970P7-AG1

Overview

The AP3970P-G1 is an offline flyback converter IC manufactured by Diodes Incorporated. It operates at a fixed switching frequency of 60kHz and delivers up to 12W of output power. The device features an internal high-voltage switch and supports input supply voltages between 5.3V and 22V, with a startup voltage threshold of 15V. It is housed in an 8-PDIP package for through-hole mounting. The component provides comprehensive protection against over-temperature conditions and output short circuits, ensuring reliable operation within an ambient temperature range of -40°C to 85°C.

Feature Summary

• Integrates a high-voltage power switch to simplify circuit design
• Provides thermal shutdown and short-circuit protection mechanisms
• Supports isolated flyback topology for versatile power conversion

Applications

• Offline AC-DC power supplies
• Flyback converter designs
• General-purpose isolated power conversion

Procurement Notes

Verify the exact suffix against official Diodes Incorporated documentation, as variations such as 'G1' or 'AG1' may indicate specific tape-and-reel packaging or environmental compliance certifications rather than functional differences. Confirm that the 8-PDIP through-hole package matches your board layout requirements. Ensure the 15V startup threshold aligns with your Vcc supply design constraints.

Selection Notes

Select this component for applications requiring a simple, cost-effective solution for low-power isolated DC-DC conversion. The fixed 60kHz frequency allows for smaller magnetic components compared to higher-frequency alternatives. Verify that the 12W power limit meets your load requirements and that the 8-PDIP package fits your assembly process. Consider the operating temperature range if the environment exceeds standard industrial limits.

Part Context

This part belongs to the family of offline switcher controllers designed for standalone power supply implementations. Unlike PWM controllers that require external MOSFETs, this integrated solution simplifies bill-of-materials and reduces board space. It targets consumer electronics and industrial equipment where moderate power levels and galvanic isolation are necessary.

Replacement Considerations

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