FAN4800CUM

Overview

The FAN4800CUM is a highly integrated Power Factor Correction (PFC) and Pulse Width Modulation (PWM) controller combination IC manufactured by onsemi. It is designed for power supplies consisting of boost PFC and PWM stages, requiring minimal external components. The device operates in an SOIC-16 surface-mount package with a specified operating temperature range from -40°C to +105°C. It supports both Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) operations.

Feature Summary

• Combines PFC and PWM controllers in a single integrated circuit
• Supports average-current-mode control for input current shaping
• Includes internal protections such as over-voltage, under-voltage, and cycle-by-cycle current limiting

Applications

• Desktop PC power supplies
• Internet server power supplies
• LCD TV and monitor power supplies
• Uninterruptible Power Supplies (UPS)
• Telecom system power supplies

Procurement Notes

Verify the specific suffix 'CUM' against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the component meets RoHS compliance requirements for your target market. Confirm availability status as this part may be subject to End-of-Life notices or production changes.

Selection Notes

Select this component for designs requiring a compact solution for AC-DC conversion with high power factor correction. It is suitable for applications needing low operating current and versatile protection features. Consider the SOIC-16 package constraints and thermal management requirements for the intended operating environment.

Part Context

This component belongs to the FAN4800 family, which includes variants like FAN4800AUN and FAN4800ANY. These parts are engineered to replace older generations like ML4800 while offering improved efficiency and reduced external component counts. The family is widely used in general-purpose power supply designs across consumer and industrial electronics.

Replacement Considerations

Pin-to-pin compatible replacements include ML4800, FAN4800, CM6800, and CM6800A. Verify that substitute parts support the required switching frequency ratios and protection thresholds before implementation.