MC44603AP

AC DC Converters, Offline Switchers Overview

The MC44603AP is a Voltage/Current PWM Switching Controller manufactured by onsemi. It operates within a supply voltage range of 9V to 18V, with a startup voltage of 14.5V. The device supports switching frequencies up to 250kHz and features an 80% maximum duty cycle. It is housed in a 16-PDIP through-hole package and functions within a temperature range of -25°C to +85°C.

AC DC Converters, Offline Switchers Feature Summary

• Implements combined voltage and current mode pulse width modulation control for power conversion applications.
• Integrates flyback topology support with synchronous rectification capabilities.
• Includes built-in protection mechanisms such as overvoltage and current limiting.
• Features integrated soft-start functionality to manage inrush currents during initialization.

AC DC Converters, Offline Switchers Applications

• Offline AC-DC converter designs
• Flyback power supply topologies

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity carefully as the MC44603AP is listed as discontinued by the manufacturer. Sourcing may require checking secondary market distributors or alternative packaging options. Confirm that the specific revision matches design requirements before integration into new production runs.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for offline applications requiring flyback topology with synchronous rectification. Ensure the design accommodates the 16-pin PDIP package constraints. Verify that the input voltage range aligns with the 9V to 18V operating window and that thermal management supports the specified junction temperature limits.

AC DC Converters, Offline Switchers Part Context

This component belongs to the GreenLine series of power management ICs from onsemi. It is part of the broader MC44603 family, which includes variants like the MC44603ADWG in surface-mount packages. The series targets efficient offline power conversion solutions.

AC DC Converters, Offline Switchers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider evaluating other GreenLine series controllers or consulting manufacturer resources for direct replacements.