MAX8550AETI+

Overview

The MAX8550AETI+ is a dual-output integrated power supply solution designed for DDR memory applications. It combines a synchronous-buck PWM controller and a sourcing/sinking LDO linear regulator in a single package. The buck controller generates VDDQ with output currents up to 15A from a 2V to 28V input range, supporting voltages down to 0.7V. The integrated LDO generates VTT, capable of sourcing or sinking up to 1.5A continuous current and 3A peak current. Both outputs track the reference input voltage.

Feature Summary

• Integrates a synchronous-buck PWM controller and a bidirectional LDO linear regulator for complete DDR power generation
• Provides high-current capability with up to 15A output from the buck stage and 1.5A continuous from the LDO
• Enables precise voltage tracking between the LDO output and the external reference input

Applications

• DDR memory power supplies for desktop computers
• Power solutions for notebook systems
• Voltage regulation for graphic cards

Procurement Notes

Verify the specific suffix against the manufacturer's official part numbering system to confirm pinout and thermal characteristics. Confirm RoHS compliance status through the latest datasheet revision. Ensure the supplier provides traceability documentation matching Analog Devices standards. Cross-reference the package marking with the official mechanical drawing to prevent counterfeit components.

Selection Notes

Select this component when designing power architectures for DDR memory that require tight tracking between core and termination voltages. The integrated topology reduces board space compared to discrete solutions. Verify that the input voltage range of 2V to 28V aligns with the system power rails. Ensure the thermal design supports the 15A buck current within the TQFN-28 package constraints.

Part Context

This device belongs to the MAX8550/MAX8551 series, which are specialized integrated power-supply solutions. These parts are engineered specifically for the stringent requirements of DDR memory interfaces. The series consolidates multiple power stages into a single IC to simplify layout and improve performance consistency in high-speed digital systems.

Replacement Considerations

Public confirmed substitute part numbers: MAX8551ETE+