RC5061MT

Overview

The RC5061MT is a high-performance programmable synchronous DC-DC controller IC manufactured by Fairchild Semiconductor. Designed for multi-voltage platforms, it functions as a switching controller specifically optimized for Intel Pentium III voltage regulation. The device operates with an input voltage range of 4.5V to 5.25V and provides a single adjustable output voltage ranging from 1.3V to 3.5V. It is housed in a 20-SOIC package.

Feature Summary

• Synchronous mode DC-DC controller architecture
• Highly accurate programmable output voltage settings
• Optimized for multi-voltage platform applications

Applications

• Intel Pentium III voltage regulator systems
• Multi-voltage platform power management
• Synchronous DC-DC conversion circuits

Procurement Notes

Verify the manufacturer designation as Fairchild Semiconductor when sourcing this component. Confirm the package type is 20-SOIC and ensure the part status is active if new production units are required. Cross-reference the full part number RC5061MT to distinguish it from similar variants like RC5061M or standard RC5061, as suffixes may indicate specific tape-and-reel packaging or temperature grades rather than functional differences.

Selection Notes

Select this controller for applications requiring precise voltage regulation for legacy Intel Pentium III architectures. Ensure the design supports a 4.5V to 5.25V input supply. The single-output configuration limits its use to primary core voltage generation rather than multi-rail distribution. Verify that the system can accommodate the 1.3V to 3.5V programmable output range required by the target processor.

Part Context

This component belongs to the Fairchild Semiconductor PMIC family, specifically categorized under special purpose regulators and switching controllers. It serves as a dedicated solution for high-performance computing platforms from the late 1990s and early 2000s. The RC5061 series addresses the need for efficient power delivery in multi-voltage environments common in that era of microprocessor design.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider evaluating other synchronous DC-DC controllers from Fairchild or successor manufacturers if direct substitution is required, ensuring compatibility with the 20-SOIC package and input/output specifications.