ML4819CP

Overview

The ML4819CP is a Power Factor Correction (PFC) and Pulse Width Modulation (PWM) controller combo IC manufactured by Fairchild Semiconductor. It integrates a boost mode PFC controller with an average current mode PWM controller in a single package. The device operates at a switching frequency of 97 kHz and provides four output channels. It features a 5 V output voltage capability with a maximum output current of 1.5 A. Designed for through-hole mounting, it is housed in a PDIP-20 package. The component functions within a temperature range of 0°C to +70°C.

Feature Summary

• Integrates complete boost mode power factor correction and PWM control functions
• Utilizes average current mode control for the PFC stage
• Provides combined power management solution in a single integrated circuit

Applications

• Power factor correction circuits in AC-DC converters
• Combined PFC and PWM power supply designs
• Industrial power management systems requiring integrated control

Procurement Notes

Verify component authenticity and datasheet version when sourcing this Fairchild Semiconductor part. Confirm package integrity for the PDIP-20 housing. Check for specific manufacturing lot codes or process change notifications that may affect compatibility. Ensure the supplier provides official documentation supporting the part number ML4819CP. Validate electrical specifications against the original manufacturer's data sheet before integration into final designs.

Selection Notes

Select the ML4819CP when a combined PFC and PWM solution is required for average current mode applications. Consider the 97 kHz switching frequency and PDIP-20 through-hole package constraints. Evaluate thermal performance within the specified operating temperature range. Compare pinout compatibility with existing PCB layouts designed for Fairchild semiconductor controllers. Verify input voltage requirements align with the 35V supply specification.

Part Context

This component belongs to the ML48xx series of power management integrated circuits from Fairchild Semiconductor. These devices are designed to simplify power supply design by combining multiple control functions. The ML4819CP specifically targets applications needing both power factor correction and regulated DC-DC conversion capabilities in a compact form factor.

Replacement Considerations

ML4818CP is a related variant within the same product family offering similar control functionalities.