MAX8805YEWEBG+

Overview

The MAX8805YEWEBG+T is a high-efficiency, fixed-frequency PWM step-down converter designed for WCDMA power amplifier applications. It integrates a 600mA switch and operates from an input voltage range of 2.7V to 5.5V. The device provides a fixed output voltage of either 2.5V or 3V with a switching frequency of 2MHz. It features a compact 16-ball wafer-level package (WLP) suitable for space-constrained designs. The component supports operation across an extended temperature range of -40°C to +85°C.

Feature Summary

• Integrates a 600mA power switch for efficient step-down conversion
• Fixed 2MHz switching frequency enables small external component size
• Optimized for low noise and high efficiency in RF PA supply applications

Applications

• WCDMA Power Amplifier (PA) power supply
• Portable wireless communication devices
• RF mixed-signal PCB power management

Procurement Notes

Verify the specific suffix configuration against the official Analog Devices part numbering system to ensure correct output voltage selection. Confirm that the requested variant matches the required fixed output specification. Note that this product line may have discontinuation notices; check current availability status through authorized distributors before finalizing procurement plans.

Selection Notes

Select this component when designing power supplies for WCDMA transceivers requiring a compact footprint and high efficiency. The fixed 2MHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Ensure the load current does not exceed the 600mA integrated switch limit. Verify thermal performance within the specified operating temperature range for the target application environment.

Part Context

This device belongs to the MAX8805Y series of step-down converters specifically engineered for mobile phone power amplifiers. It addresses the need for clean, efficient power delivery in RF sections while minimizing board space. The series is characterized by its integration of the power switch and control logic into a minimal package, supporting the trend toward miniaturization in cellular handsets.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Check for direct pin-compatible upgrades within the same manufacturer's portfolio if this specific package or output voltage variant is discontinued.