MAX8805YEWEEE+T

Overview

The MAX8805YEWEEE+T is a high-efficiency, fixed-frequency PWM step-down DC-DC converter designed for WCDMA power amplifier applications. It integrates a 1.2A switch and operates from an input voltage range of 2.7V to 5.5V. The device provides a single adjustable output voltage ranging from 0.4V to 5.5V with a maximum output current of 600mA. Operating at a fixed switching frequency of 2MHz, it utilizes a 16-pin Wafer-Level Package (WLP) for compact footprint requirements. The converter supports operation across an extended temperature range of -40°C to +85°C.

Feature Summary

• Integrates a 1.2A power switch for efficient step-down conversion
• Fixed 2MHz switching frequency enables small external component size
• Supports bypass mode for enhanced PA performance and system efficiency
• Compact 16-WLP package suitable for space-constrained mobile designs

Applications

• WCDMA Power Amplifier (PA) supply
• Mobile phone main logic board power distribution
• Battery-powered portable electronic devices
• General-purpose low-voltage step-down regulation in smartphones

Procurement Notes

Verify the specific suffix 'EWE' against the manufacturer's official part numbering guide to confirm pinout and thermal pad configuration. Confirm RoHS compliance status through the latest datasheet revision. Check for End-of-Life (EOL) notices or Product Change Notifications (PCN) as this series may have discontinued variants. Ensure the supplier provides valid traceability documentation for the WLP package type.

Selection Notes

Select this component when a compact solution is required for driving WCDMA power amplifiers with moderate current demands up to 600mA. The 2MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the WLP package constraints for PCB layout and thermal dissipation. Verify that the input voltage range of 2.7V to 5.5V aligns with the battery profile of the target application.

Part Context

This part belongs to the MAX8805 family of high-efficiency step-down converters optimized for RF power amplifier supplies. The family includes variants with different packages and output configurations. The MAX8805 series is specifically engineered to meet the transient response and efficiency requirements of modern cellular communication standards, particularly in mobile handsets where space and battery life are critical constraints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Users should consult Analog Devices official cross-reference tools or contact authorized distributors for current availability and equivalent replacements.