MC44604P

AC DC Converters, Offline Switchers Overview

The MC44604P is a high-performance GreenLine PWM controller designed for offline and DC-to-DC converter applications. It features current mode control with operation up to 250 kHz switching frequency. The device includes an internally trimmed reference, undervoltage lockout with hysteresis, and a high-current totem pole output suitable for driving power MOSFETs. Key safety features include overvoltage protection against open loop conditions, short circuit protection on the oscillator pin, and fully programmable foldback. It supports secondary or primary sensing and offers soft-start functionality.

AC DC Converters, Offline Switchers Feature Summary

• High current totem pole output for efficient MOSFET driving
• Inherent feed forward compensation for stable regulation
• Latching PWM for cycle-by-cycle current limiting
• Low startup and operating current for energy efficiency

AC DC Converters, Offline Switchers Applications

• Offline flyback converters
• DC-to-DC converters
• High safety pulsed mode standby power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity through authorized channels due to potential counterfeit risks in the market. Confirm RoHS compliance status as package availability may vary. Check for obsolescence notices or lifecycle changes from ON Semiconductor before finalizing procurement plans. Ensure storage conditions meet semiconductor handling standards to maintain performance integrity upon installation.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for applications requiring precise frequency control and robust protection mechanisms. It is ideal for designs prioritizing low standby losses through pulsed mode operation. Consider the 250 kHz maximum frequency when designing magnetic components. Evaluate the need for external sensing configuration based on specific topology requirements and isolation needs.

AC DC Converters, Offline Switchers Part Context

The MC44604P belongs to ON Semiconductor's GreenLine family of controllers, emphasizing energy efficiency and safety. It serves as an enhanced solution for modern power supply designs aiming to meet strict standby power regulations. The part integrates advanced features typically found in higher-cost solutions into a single compact package.

AC DC Converters, Offline Switchers Replacement Considerations

MC44604PG

AC DC Converters, Offline Switchers FAQ

What is the maximum switching frequency?

The MC44604P supports operation up to 250 kHz.

Does it support primary or secondary sensing?

Yes, the controller allows for either secondary or primary sensing configurations.