MC33470DWG

Overview

The MC33470DWG is a single-output voltage regulator controller designed for Intel Pentium II processor applications. It operates with an input voltage range of 4.5V to 5.5V and provides an adjustable output voltage between 1.8V and 3.5V. The device is housed in a 20-SOIC package (0.295 inch width) and supports surface-mount installation. It functions within a commercial temperature range of 0°C to 70°C. This component is classified as a special-purpose regulator IC intended for specific computer system power management tasks.

Feature Summary

• Designed specifically for Intel Pentium II processor voltage regulation
• Single-output control architecture for dedicated power rails
• Surface-mount construction in a standard SOIC package

Applications

• Intel Pentium II processor power supply systems
• Computer motherboard voltage regulation modules
• Desktop PC power distribution units

Procurement Notes

Verify the obsolete status of this component before integration, as it may no longer be in active production. Confirm that the 20-SOIC package dimensions align with existing board footprints. Ensure compatibility with legacy Intel Pentium II platform requirements. Check for available replacement alternatives if long-term supply stability is required for new designs.

Selection Notes

Select this controller only for systems requiring compatibility with Intel Pentium II specifications. The fixed input range suits 5V primary rails. Consider the single-output limitation when designing multi-rail systems. Evaluate thermal performance within the 0°C to 70°C operating window. Verify that the SOIC-20 footprint matches the target PCB layout constraints.

Part Context

This part belongs to onsemi's portfolio of specialized power management integrated circuits. It falls under the category of special-purpose regulators rather than general-purpose switching controllers. The device addresses historical computing platforms, specifically targeting the power delivery needs of early 2000s microprocessors. It represents a niche segment of the company's broader PMIC offerings focused on legacy or specific industrial standards.

Replacement Considerations

Consult official obsolescence notices for qualified substitute part numbers. Verify pin-to-pin compatibility if replacing in existing assemblies. Ensure new selections support equivalent voltage ranges and processor interfaces.