FAN4801SMY

Overview

The FAN4801SMY is a highly integrated Power Factor Correction (PFC) and Pulse Width Modulation (PWM) controller combination designed for power supplies utilizing boost PFC stages. It operates within a supply voltage range of 11V to 22V and dissipates up to 800 mW. The device supports a switching frequency of 64 kHz and functions reliably across an operating temperature range from -40°C to 105°C. It is housed in a 16-pin Surface Mount SOIC package with a height of 1.5 mm.

Feature Summary

• Combines PFC and PWM control functions in a single highly integrated component
• Supports both current mode and voltage mode PWM operation
• Includes accurate maximum PWM duty cycle limiting for extended run times
• Features built-in under-voltage protection and PFC soft-start capabilities

Applications

• Power supplies incorporating boost PFC topology
• Systems requiring combined power factor correction and post-regulation
• Universal input AC-DC conversion designs

Procurement Notes

Verify the specific suffix 'SMY' against official manufacturer documentation to confirm pinout and electrical characteristics, as variations exist within the family. Confirm RoHS compliance status and lead-free certification requirements for your assembly process. Check for 'Not Recommended for New Designs' status if applicable to ensure long-term availability alignment with project lifecycles.

Selection Notes

Select this component when a unified solution for boost PFC and PWM regulation is required to minimize external component count. Ensure the design accommodates the specified 11V to 22V supply voltage range and 64 kHz switching frequency. Verify that the thermal management strategy supports the 800 mW dissipation limit within the target operating temperature environment.

Part Context

This part belongs to the FAN4800A/C and FAN4801/1S/2/2L series, which are engineered to replace older ML4800 and FAN4800 designs. These controllers offer lower quiescent current and enhanced protection features compared to previous generations. The series is available in 16-pin DIP and SOP packages to support various board layout requirements.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.