MAX1917EEE

Overview

The MAX1917EEE is a synchronous step-down switching controller designed for DDR memory power applications. It operates with an input voltage range of 2.7V to 5.5V and delivers up to 25A of output current. The device integrates a fixed 1MHz switching frequency and automatically sets the VTT output to half the VDDR value. It utilizes a 16-pin QSOP package and supports digital control via I2C interface.

Feature Summary

• Automatically regulates VTT to one-half of the VDDR supply voltage
• Integrates high-side and low-side drivers for synchronous buck operation
• Supports digital configuration through an I2C-compatible serial interface

Applications

• DDR2/DDR3 memory power supplies
• Point-of-load regulation for high-current digital circuits
• Industrial and automotive systems requiring stable low-voltage rails

Procurement Notes

Verify the specific suffix (e.g., +T for tape/reel) against your manufacturing requirements, as the base part number may refer to tube packaging. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability varies by region and production lot.

Selection Notes

Select this component when designing power stages for DDR memory interfaces requiring precise VTT tracking. Ensure the thermal design accommodates the 25A capability within the QSOP package constraints. Verify that the system logic levels are compatible with the I2C control interface for configuration.

Part Context

This device belongs to the Maxim Integrated family of DDR power management solutions. It is engineered to simplify board layout by integrating drivers and control logic into a compact form factor, reducing the component count compared to discrete solutions for similar current ratings.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices official cross-reference tools or datasheets for equivalent products within the MAX19xx series.