MAX1718EEI

Overview

The MAX1718EEI+ is a switching controller designed for notebook CPU step-down applications, specifically supporting Intel Mobile Voltage Positioning (IMVP-II). It operates in a buck topology with one output capable of delivering up to 4 A. The device supports a switch frequency range from 200 kHz to 1 MHz and provides an adjustable output voltage between 600 mV and 1.75 V. It features a maximum duty cycle of 100% and includes shutdown functionality. The component operates within a temperature range of -40°C to +85°C and is housed in a QSOP-28 package.

Feature Summary

• Supports Intel Mobile Voltage Positioning (IMVP-II) specifications for notebook processors
• Capable of high current delivery up to 4 A for CPU power stages
• Features adjustable switching frequency ranging from 200 kHz to 1 MHz
• Includes integrated shutdown control for power management

Applications

• Notebook CPU power supply design
• Intel IMVP-II compliant system architectures
• Step-down voltage regulation for mobile processors

Procurement Notes

Verify the exact suffix designation, as the provided model lacks the standard '+' lead-free indicator often found in current documentation. Confirm availability status, as restricted supply conditions may apply. Ensure compatibility with existing board layouts using the QSOP-28 package. Validate thermal requirements against the specified operating temperature range. Cross-reference with official Analog Devices datasheets for complete electrical characteristics.

Selection Notes

Select this component when designing power stages for Intel IMVP-II compatible mobile processors requiring up to 4 A output current. Consider the QSOP-28 package constraints for PCB layout. Evaluate the need for external components to set the switching frequency within the 200 kHz to 1 MHz range. Ensure the input voltage source aligns with typical notebook battery voltages. Verify that the 600 mV to 1.75 V output range matches the target processor core voltage requirements.

Part Context

The MAX1718 belongs to the Maxim Integrated portfolio of power management ICs tailored for mobile computing platforms. This series addresses the specific transient response and efficiency demands of modern laptop CPUs. The EEI suffix typically denotes an extended industrial temperature range and specific packaging variant within the broader MAX1718 family.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Check for newer generations supporting updated Intel voltage positioning standards. Verify pin-to-pin compatibility if replacing on existing hardware.