MAX8554EEE+T

Overview

The MAX8554EEE+T is a synchronous step-down controller designed for powering DDR memory applications. It features a Quick-PWM architecture for fast transient response and operates with an input voltage range of 4.5V to 28V. The device supports a maximum output current of 25A, delivering voltages down to 3.5V. It functions at a switching frequency of 550kHz and is housed in a QSOP-16 package.

Feature Summary

• Quick-PWM architecture enables rapid transient response
• Supports pseudo-fixed frequency operation modes
• Eliminates the need for external bias power supplies

Applications

• DDR memory power supply systems
• High-current point-of-load regulation
• General-purpose synchronous buck control

Procurement Notes

Verify that the ordering suffix 'T' indicates tape-and-reel packaging rather than tube. Confirm the specific manufacturer designation matches Analog Devices or Maxim Integrated records. Ensure the component meets RoHS compliance standards as specified in the official datasheet before finalizing procurement orders.

Selection Notes

Select this controller when high current delivery up to 25A is required for memory loads. The wide input voltage range suits various bus architectures. Consider the fixed 550kHz frequency for EMI planning. Verify thermal requirements for the QSOP-16 package under full load conditions.

Part Context

This part belongs to the MAX8554 series of synchronous controllers. It is distinct from the MAX8505, which is a lower-power integrated switch regulator. The MAX8554 focuses on high-current control without internal switches, differentiating it from LDO regulators like the MAX8556.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.