MAX8553EEE+T

Overview

The MAX8553EEE+T is a synchronous buck controller manufactured by Analog Devices under the Maxim Integrated brand. It operates with an input voltage range of 4.5 V to 28 V and supports adjustable output voltages. The device integrates a high-side N-channel MOSFET driver and features a fixed switching frequency of 550 kHz. Packaged in a 16-pin QSOP, it is designed for efficient power conversion in systems requiring stable DC-DC regulation.

Feature Summary

• Synchronous buck control architecture integrating high-side N-channel MOSFET driver
• Wide input voltage capability supporting 4.5 V to 28 V operation
• Fixed 550 kHz switching frequency for optimized passive component size

Applications

• DDR memory power supply regulation
• Point-of-load DC-DC conversion
• General-purpose synchronous step-down power stages

Procurement Notes

Verify the specific suffix 'EEE+T' against official datasheets to confirm tape-and-reel packaging and lead-free compliance. Confirm current lifecycle status as distribution availability varies. Ensure the supplier provides valid traceability documentation for this discontinued or limited-stock component.

Selection Notes

Select this controller when a synchronous solution is required for inputs up to 28 V. The integrated high-side driver reduces external component count compared to non-synchronous alternatives. Verify that the 550 kHz frequency aligns with thermal and efficiency requirements for the target PCB layout.

Part Context

This component belongs to the MAX8553 series of switching controllers. It is distinct from linear regulators like the MAX8563 or other buck converters such as the MAX8505. The part serves as a dedicated controller rather than a complete regulator with internal switches.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.