MAX1821XEUB

Overview

The MAX1821XEUB is a high-efficiency step-down switching regulator from the MAX1820/MAX1821 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates with an input voltage range of 2.6V to 5.5V and provides an adjustable output voltage from 1.25V to 5.5V. The device supports a single output channel and is designed for surface-mount installation in a 10-pin µMAX package. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• High-efficiency step-down voltage conversion architecture
• Adjustable output voltage capability across a wide range
• Compact surface-mount packaging for space-constrained designs

Applications

• DDR memory power supply applications
• Voltage converter circuits
• Networking system-on-chip (SoC) power management

Procurement Notes

Verify component authenticity through authorized distribution channels due to limited availability status. Confirm package integrity and pin alignment upon receipt. Ensure storage conditions meet manufacturer specifications to prevent moisture damage. Validate part markings against official datasheet documentation before integration into production workflows.

Selection Notes

Select this component when a compact, adjustable buck regulator is required for low-voltage digital loads. Consider the 10-pin µMAX package for board space optimization. Verify that the input voltage range aligns with the system power source. Evaluate thermal performance requirements relative to the expected load current and ambient operating conditions.

Part Context

This device belongs to the MAX1820/MAX1821 series of switching regulators. It shares architectural similarities with the MAX1820ZEUB-T but offers distinct output voltage ranges. The series targets portable electronics and communication equipment requiring efficient power management in small form factors.

Replacement Considerations

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