RC5054AM

Overview

The RC5054AM is a synchronous DC-DC controller IC manufactured by Fairchild Semiconductor, housed in a 20-SOIC package. It functions as a buck regulator with positive output configuration and transistor driver outputs. The device operates within a supply voltage range of 10.8V to 13.2V and supports a switching frequency of 200kHz. Designed for high-performance microprocessor applications, it provides complete control and protection for DC-DC converters.

Feature Summary

• Provides complete control and protection for DC-DC converter circuits
• Optimized specifically for high-performance microprocessor power applications
• Features synchronous rectification topology for improved efficiency

Applications

• High-performance microprocessor power supplies
• Buck regulator circuit design
• DC-DC converter systems requiring integrated protection

Procurement Notes

Verify the manufacturer designation, as Fairchild Semiconductor's semiconductor division was acquired by onsemi. Confirm the specific suffix 'AM' corresponds to the required package type and temperature rating. Ensure compatibility with existing board layouts for the 20-SOIC footprint. Check current product status to confirm availability or identify potential obsolescence risks before finalizing procurement plans.

Selection Notes

Select this component when designing synchronous buck converters for microprocessor cores requiring precise control and protection features. The fixed 200kHz switching frequency and 10.8V-13.2V input range suit specific voltage rails. Consider the 20-SOIC package constraints for thermal management and PCB space. Verify that the single-phase output configuration meets the load requirements of the target application.

Part Context

The RC5054A series belongs to Fairchild's portfolio of power management integrated circuits designed for demanding computing environments. This specific model integrates PWM control logic with gate drivers for external MOSFETs. It represents a solution for step-down voltage conversion where efficiency and transient response are critical for processor stability.

Replacement Considerations

Check for direct pin-compatible alternatives from onsemi or other manufacturers offering similar synchronous buck controllers. Verify that any substitute maintains the 200kHz switching frequency and compatible input voltage range. Ensure the replacement package matches the 20-SOIC dimensions for seamless integration.