MC33470DW

Overview

The MC33470DWG is a voltage regulator controller IC designed for Intel Pentium II processor applications. It provides a single output with an adjustable voltage range of 1.8V to 3.5V, powered by a 4.5V to 5.5V input supply. The device operates within a commercial temperature range of 0°C to 70°C and is housed in a 20-SOIC package (0.295" width). This component is classified as obsolete.

Feature Summary

• Integrated controller architecture optimized for specific Intel processor power requirements
• Single-channel regulation capability with wide output voltage adjustability
• Surface-mount construction in a standard SOIC footprint

Applications

• Intel Pentium II processor voltage regulation
• Desktop computer motherboard power systems
• Legacy PC platform power management

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Verification of current availability requires checking distributor channels for remaining stock or surplus inventory. Designers should confirm lead times and authenticity through authorized suppliers before procurement planning.

Selection Notes

Selection is limited to legacy system maintenance due to the obsolete status. Engineers must evaluate pin compatibility and thermal characteristics against existing board layouts. Alternative modern controllers require comprehensive redesign of feedback networks and control loops.

Part Context

Part of the MC33470 family, this IC serves as a specialized power management solution for early 2000s computing platforms. It integrates control logic necessary for stable processor core voltage delivery during high-load operations typical of that era's microarchitecture.

Replacement Considerations

No direct public substitute part numbers are confirmed for this obsolete component. Replacement typically involves selecting a modern multi-phase controller and redesigning the associated gate drive and feedback circuitry.