FAN4800CSMY

Overview

The FAN4800CSMY is a Power Factor Correction (PFC) and Pulse Width Modulation (PWM) controller manufactured by Fairchild Semiconductor. It integrates PFC and PWM control functions in a single package, supporting Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM). The device operates with a supply voltage range of 11V to 16.5V and features a switching frequency between 66kHz and 84kHz. It is housed in a 16-SOIC surface-mount package.

Feature Summary

• Integrates power factor correction and pulse width modulation controllers
• Supports continuous conduction mode and discontinuous conduction mode operation
• Includes post regulator functionality for enhanced stability

Applications

• Power factor correction circuits
• Switching power supplies
• AC-DC converters

Procurement Notes

Verify the manufacturer origin as Fairchild Semiconductor or ON Semiconductor due to corporate acquisition history. Confirm the specific suffix 'CSMY' corresponds to the 16-SOIC package and commercial temperature range. Ensure RoHS compliance status matches current regulatory requirements for your region before procurement.

Selection Notes

Select this component when a combined PFC and PWM solution is required to reduce board space. It is suitable for applications needing CCM/DCM flexibility. Verify that the operating frequency range of 66kHz to 84kHz aligns with your electromagnetic interference constraints and transformer design specifications.

Part Context

This part belongs to the FAN4800 series of power management integrated circuits. The series is designed for high-efficiency power conversion systems. Fairchild Semiconductor developed these controllers to simplify the design of AC-DC power supplies by combining two critical control loops into one device.

Replacement Considerations

Check for direct pin-to-pin replacements within the same family, such as the FAN4800AMY. Verify compatibility with existing PCB layouts and thermal management solutions when substituting.