onsemi MC44603ADWG

MC44603ADWG - GreenLine™ PWM Controller for Flyback Applications

The MC44603ADWG from onsemi is a high-performance pulse-width modulation (PWM) controller designed for isolated flyback switching power supply applications. Part of the GreenLine™ series, this controller IC delivers reliable performance across industrial, telecom, and consumer electronics applications requiring efficient AC-DC or DC-DC conversion.

Key Features & Benefits

• Isolated Flyback Topology: Optimized for galvanically isolated power supply designs with comprehensive protection features
• Wide Supply Voltage Range: Operates from 9V to 18V with 14.5V start-up voltage for flexible design integration
• High Switching Frequency: Supports up to 250kHz operation enabling compact transformer and filter designs
• 80% Maximum Duty Cycle: Maximizes power transfer efficiency in flyback configurations
• Integrated Protection: Current limiting and over-voltage protection safeguard your power supply and connected loads
• Advanced Control Features: Soft start reduces inrush current; sync capability enables multi-rail coordination
• Extended Temperature Range: -25°C to 150°C junction temperature rating for demanding environments
• Compact Surface Mount Package: 16-SOIC (7.50mm width) for automated assembly and space-constrained designs

Typical Applications

• AC-DC offline switching power supplies
• Isolated DC-DC converters for industrial equipment
• Telecom and networking infrastructure power modules
• Battery charger controllers
• Auxiliary power supplies in automotive and medical devices

Design Support & Compliance

Full technical documentation including datasheets, reference designs, and application notes are available to accelerate your design-in process. The MC44603ADWG meets RoHS and REACH compliance requirements for global market access.

All specifications subject to change without notice. Please refer to the official datasheet for complete electrical characteristics and application guidelines.

• MC44603ADWG.pdf