IRU3033CS

Special Purpose Regulators Overview

The IRU3033CS is a discontinued power management integrated circuit manufactured by Infineon Technologies. It functions as a specialized voltage regulator controller designed for Intel Pentium II and P55C processors. The device operates with a single output providing a regulated voltage range between 2V and 3.5V, driven by a 12V input supply. It is housed in an 8-SOIC surface-mount package suitable for standard PCB assembly. The component supports a commercial operating temperature range from 0°C to 70°C and is classified under special-purpose regulators within the PMIC category.

Special Purpose Regulators Applications

• Voltage regulation for Intel Pentium II processors
• Power control for Intel P55C processors
• System controller applications requiring specific core voltage levels

Special Purpose Regulators Procurement Notes

This component is officially listed as obsolete and no longer in production. Procurement must rely on third-party distributors or surplus inventory markets. Verify authenticity carefully due to the discontinuation status. Confirm the exact suffix CS matches the required 8-SOIC package specification. Availability is subject to stock depletion without replacement guarantees from the manufacturer.

Special Purpose Regulators Selection Notes

Select this part only for legacy systems specifically requiring compatibility with Intel Pentium II or P55C architectures. Modern designs should utilize current Infineon PMIC solutions offering improved efficiency and broader voltage ranges. Ensure the 8-SOIC footprint fits the existing board layout. Consider thermal performance within the 0°C to 70°C operational window during integration planning.

Special Purpose Regulators Part Context

The IRU3033 belongs to Infineon's historical portfolio of processor-specific voltage regulators. It was engineered to meet the precise power delivery requirements of early 1990s and early 2000s x86 microprocessors. As a dedicated controller rather than a general-purpose switcher, it simplifies design for specific CPU families but lacks flexibility for modern multi-core or variable-load applications.

Special Purpose Regulators Replacement Considerations

No direct public substitute is confirmed. Legacy system maintenance may require sourcing from authorized surplus channels. For new designs, consult current Infineon processor voltage regulator ICs compatible with modern Intel platforms.