MAX8805WEWECD+T

Overview

The MAX8805WEWECD+T is a high-efficiency, hysteretic step-down DC-DC converter designed for WCDMA power amplifier applications. It delivers an output current of 650 mA with an input voltage range of 2.7 V to 5.5 V and an adjustable output voltage from 0.4 V to 5.5 V. Operating at a fixed switching frequency of 2 MHz, the device utilizes a compact 16-WLP package. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Hysteretic control architecture for rapid transient response
• Integrated bypass mode for enhanced efficiency
• Optimized for RF power amplifier supply

Applications

• WCDMA Power Amplifier (PA) power supply
• RF transceiver biasing
• Portable communication devices

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS3 compliance and MSL rating during integration. Cross-reference datasheet revisions to ensure pinout compatibility with existing designs.

Selection Notes

Select this component for space-constrained RF designs requiring fast load transient response. The 2 MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Ensure input voltage stability within the specified 2.7 V to 5.5 V range for optimal regulation.

Part Context

Part of the MAX8805 family, which includes variants like MAX8805YEWEBG+T and MAX8805WEWEEE+T. These devices share similar hysteretic buck topologies but differ in packaging and specific electrical characteristics tailored for mobile phone PA applications.

Replacement Considerations

MAX8805WEWEEE+T and MAX8805YEWEBG+T are related family members. Verify package compatibility and output current ratings before substitution.