FAN4800CMY-FS

Overview

The FAN4800CMY-FS is a highly integrated Power Factor Correction (PFC) and Pulse Width Modulation (PWM) controller combination designed for boost PFC and downstream PWM power supplies. It operates in SOP-16 surface-mount packages with an operating temperature range of -40°C to +105°C. The device supports average current mode control for the front-end CCM boost converter and configurable voltage or current mode for the downstream stage, utilizing proprietary leading/trailing-edge modulation techniques.

Feature Summary

• Combines average current mode PFC controller and configurable PWM controller in a single IC
• Features proprietary leading/trailing-edge modulation to reduce output capacitor ripple current
• Includes built-in protections such as programmable soft-start, over-voltage protection, and brownout detection

Applications

• Boost PFC front-end stages
• Downstream DC-DC converters
• Universal input AC-DC power supplies

Procurement Notes

Verify component authenticity through authorized onsemi channels due to discontinued status. Confirm package integrity and moisture sensitivity handling requirements before assembly. Review official discontinuation notices for lifecycle management strategies.

Selection Notes

Select this component for designs requiring integrated PFC and PWM control with minimal external components. Ensure compatibility with existing compensation networks when replacing legacy ML4800 or FAN4800A variants. Verify thermal performance within the specified industrial temperature range.

Part Context

This part belongs to the FAN4800 family of power management ICs originally developed by Fairchild Semiconductor, now managed by onsemi. The series is characterized by high integration levels for AC-DC conversion applications, combining critical control functions to simplify board layout and reduce bill of materials.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.