IRU3047CWTR

Overview

The IRU3047CWTR is a triple-output voltage regulator IC designed for Intel Pentium III processors. It integrates one synchronous buck converter and one linear regulator (LDO) to provide multiple supply rails. The device operates with input voltages of 5V and 12V, delivering output voltages ranging from 1.3V to 3.5V. It is housed in a 20-SOIC package and functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Integrates synchronous buck and linear regulator topologies for efficient power management
• Provides three distinct output channels for processor core and peripheral supplies
• Designed specifically for compatibility with Intel Pentium III architecture

Applications

• Intel Pentium III processor voltage regulation
• Data processing system power distribution
• Multi-rail server or workstation power supplies

Procurement Notes

Verify component status carefully as this part is officially obsolete. Confirm availability through authorized distributors or surplus suppliers. Ensure the 20-SOIC package matches your PCB footprint. Check RoHS compliance requirements against project specifications, noting potential regulatory differences for older components.

Selection Notes

Select this component only if designing for legacy Intel Pentium III platforms requiring specific voltage sequencing. Evaluate thermal performance within the 0°C to 70°C operating range. Consider pin compatibility and control interface requirements for existing system designs. Verify that the integrated buck and LDO outputs meet the target load current demands without external amplification.

Part Context

This IC belongs to Infineon's PMIC portfolio for data processing systems. It replaces earlier discrete regulator solutions by integrating multiple conversion stages into a single package. The design supports stable operation for high-performance CPUs requiring precise voltage levels during active processing states.

Replacement Considerations

No direct public substitute part numbers are confirmed for this obsolete component. Designers must evaluate pin-compatible alternatives or redesign the power stage using modern multi-phase controllers.