MAX1820XEUB+

Overview

The MAX1820XEUB+ is a single-output synchronous buck regulator optimized for WCDMA power amplifier supply applications. It features a dynamically adjustable PWM architecture with a synchronizable clock frequency of 13MHz. The device operates within an input voltage range of 2.6V to 5.5V and provides an adjustable output voltage from 400mV to 3.4V at up to 600mA. It supports surface mount installation in a UMAX-10 package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Synchronous buck topology designed for high efficiency in RF power amplifier supplies
• Dynamically adjustable pulse-width modulation for precise voltage control
• Clock synchronization capability to minimize system noise interference

Applications

• WCDMA power amplifier biasing
• RF transceiver power management
• Portable wireless communication devices

Procurement Notes

Verify the specific suffix and manufacturer documentation to confirm exact electrical characteristics and pinout compatibility before integration. Ensure that the sourcing channel provides valid traceability for this Analog Devices component, as availability may vary by region.

Selection Notes

Select this component when designing systems requiring synchronized switching frequencies to reduce electromagnetic interference in dense RF environments. Consider the 600mA current limit and 13MHz operation speed relative to the load transient requirements of the target power amplifier stage.

Part Context

This part belongs to the MAX1820 series of power management ICs developed by Maxim Integrated, now part of Analog Devices. These regulators are specifically engineered to meet the stringent efficiency and noise requirements of modern cellular infrastructure and mobile handsets.

Replacement Considerations

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