MAX1938EEI

Overview

The MAX1938EEI is a synchronous, two-phase step-down controller designed for Intel VRM 9.0/9.1-compliant CPU core power applications. It operates with an input voltage range up to 24V and provides dual outputs adjustable from 800mV to 3.6V. The device supports output currents up to 30A per phase. It functions within a temperature range of -40°C to +85°C and is housed in a QSOP-28 package.

Feature Summary

• Synchronous two-phase buck control architecture
• Compliance with Intel VRM 9.0/9.1 specifications
• Integrated high-side and low-side gate drivers

Applications

• CPU core supply control
• Embedded microprocessor power management
• Edge computing systems

Procurement Notes

Verify the specific suffix (e.g., EEI) against the official datasheet to ensure correct temperature grade and packaging. Confirm current availability status as distribution channels may list limited or obsolete stock. Cross-reference pinouts with the target PCB footprint to prevent integration errors during procurement.

Selection Notes

Select this component for designs requiring strict adherence to Intel VRM 9.0/9.1 standards for processor core regulation. Ensure the input supply voltage does not exceed the 24V maximum rating. Verify that the thermal requirements of the QSOP-28 package are met by the system's cooling solution for continuous operation at high load currents.

Part Context

This part belongs to the Maxim Integrated family of power management ICs, specifically engineered for high-performance computing environments. It serves as a critical interface between the main power rail and sensitive logic cores, ensuring stable voltage delivery under dynamic load conditions typical in modern processors.

Replacement Considerations

Public confirmed substitute part numbers: None identified.