FAN4810MX

Overview

The FAN4810MX is a power factor correction controller manufactured by onsemi, formerly Fairchild Semiconductor. It operates in average current mode using pulse width modulation to regulate PFC pre-regulators. The device functions within an input voltage range of 11 V to 16.5 V, with a nominal supply of 15 V. It utilizes a 16-pin SOIC package (PDSO16) measuring 9.9 mm in length and 3.90 mm in width. The component supports surface mount installation and has a humidity sensitivity level of 1.

Feature Summary

• Implements average current mode control for power factor correction applications
• Utilizes pulse width modulation technology for regulation
• Designed as a PFC preregulator controller

Applications

• Power factor correction preregulator circuits
• Average current mode controlled power supplies

Procurement Notes

Verify the manufacturer origin carefully, as the part was originally developed by Fairchild Semiconductor and is now produced by onsemi. Confirm the specific suffix indicates the correct tape and reel packaging variant if required for automated assembly processes. Check for end-of-life status and availability of alternative sources from authorized distributors.

Selection Notes

Select this component for designs requiring average current mode PFC control in a compact 16-SOIC footprint. Ensure the system input voltage remains within the specified 11 V to 16.5 V operating range. Consider the thermal characteristics of the SOIC package for heat dissipation requirements in the target application environment.

Part Context

This integrated circuit belongs to the FAN4810 series of power management ICs. It serves as a dedicated controller for improving power efficiency in electronic systems by correcting the phase difference between voltage and current. The device represents a transition from Fairchild Semiconductor's product line to onsemi following corporate restructuring.

Replacement Considerations

Public confirmed substitute: LT1248CS#TRPBF from Analog Devices Inc.