MAX1820XEUB

Overview

The MAX1820XEUB is a switching voltage regulator designed for WCDMA applications, functioning as a high-efficiency buck converter. It integrates a power switch capable of delivering up to 600mA of output current. The device operates with an input voltage range supporting typical mobile phone battery supplies and utilizes a fixed internal switching frequency to minimize external component count. It features current-mode control architecture for rapid transient response and includes protection mechanisms such as thermal shutdown and current limiting to ensure reliable operation in portable electronic systems.

Feature Summary

• Integrates a high-current power switch for efficient step-down conversion
• Utilizes current-mode control architecture for fast transient response
• Includes built-in thermal shutdown and overcurrent protection
• Optimized for compact design in portable wireless communication devices

Applications

• WCDMA mobile phone power management
• Portable consumer electronics voltage regulation
• Battery-powered device DC-DC conversion

Procurement Notes

Verify the specific suffix (e.g., +T) and temperature grade against the original datasheet requirements. Confirm package availability and lead times directly with authorized distributors or Analog Devices, as supply status may vary. Ensure compatibility with existing PCB footprint and thermal design constraints before finalizing procurement.

Selection Notes

Select this component when designing power stages for WCDMA handsets requiring a compact, high-efficiency solution. Consider the integrated switch current rating and switching frequency relative to inductor selection. Evaluate thermal performance under maximum load conditions and verify that the input voltage range aligns with the system battery profile.

Part Context

The MAX1820XEUB belongs to the Maxim Integrated family of switching regulators tailored for mobile communications. It complements other PMIC solutions by providing dedicated voltage rails for RF and baseband sections. The part is characterized for industrial or extended temperature ranges depending on the specific suffix, ensuring stability in demanding portable environments.

Replacement Considerations

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