KA5M0265RYDTU

AC DC Converters, Offline Switchers Overview

The KA5M0265RYDTU is an obsolete offline switching regulator IC from onsemi, designed for flyback and forward converter topologies. It features a built-in 650V power switch and operates at a fixed switching frequency of 67kHz. The device supports a supply voltage range of 8.8V to 30V with a startup voltage of 15V. It achieves a maximum duty cycle of 77% and dissipates up to 42W of power. Packaged in a TO-220-4 Full Pack (TO-220F-4L) for through-hole mounting, it functions within a temperature range of -25°C to +85°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage 650V power switch for compact offline power supply designs.
• Includes comprehensive protection mechanisms against overcurrent, overload, overtemperature, and overvoltage conditions.
• Features soft-start control to limit inrush current during power-up sequences.

AC DC Converters, Offline Switchers Applications

• Flyback AC-DC converter circuits
• Forward AC-DC converter architectures
• Offline power supply modules

AC DC Converters, Offline Switchers Procurement Notes

This component is officially obsolete and no longer manufactured by onsemi. Procurement is restricted to remaining stock or secondary market channels. Verify the authenticity of available units carefully, as process change notifications and end-of-life announcements have been issued. Ensure that any sourced inventory matches the specific TO-220F-4L package variant required for your design.

AC DC Converters, Offline Switchers Selection Notes

Designers should consider the NCP11184A065PG as a recommended replacement from onsemi due to the obsolescence of this part. The selection process must account for the fixed 67kHz switching frequency and the specific thermal requirements of the TO-220-4 package. Evaluate the 650V breakdown voltage and 15V startup threshold against the target application's input voltage range and load requirements.

AC DC Converters, Offline Switchers Part Context

The KA5M0265RYDTU belongs to the FPS series of power management integrated circuits. It is categorized under AC-DC converters and offline switching regulators. This component represents a legacy solution for isolated power conversion, utilizing a monolithic architecture that combines control logic with a high-voltage MOSFET output stage in a single through-hole package.

AC DC Converters, Offline Switchers Replacement Considerations

The NCP11184A065PG is identified as a manufacturer-recommended substitute. Both parts operate within similar voltage ranges and support flyback/forward topologies. However, verify pinout compatibility and switching frequency differences when transitioning to the replacement component to ensure circuit stability.