MAX8805ZEWEDD+

Overview

The MAX8805ZEWEDD+ is a high-efficiency step-down switching regulator manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates with an input voltage range of 2.7V to 5.5V and provides a single adjustable output channel capable of delivering up to 600mA of continuous current. The device utilizes a fixed 2MHz PWM switching frequency to minimize external component size while maintaining stable regulation. It is housed in a compact 16-lead SOIC package (0.295" width) designed for surface-mount assembly. The unit functions within a commercial temperature range of -40°C to +85°C, ensuring reliable performance in portable electronic applications requiring efficient power conversion.

Feature Summary

• Integrated hysteretic control architecture for rapid transient response
• High switching frequency operation reduces passive component footprint
• Buck topology optimized for battery-powered mobile devices

Applications

• WCDMA power amplifier supply
• Portable communication equipment
• Battery-operated handheld devices

Procurement Notes

Verify the specific suffix 'ZEWEDD+' against official datasheets to confirm the 16-SOIC package variant, as other suffixes may indicate different packages like WLP or BGA. Confirm end-of-life status with the manufacturer, as this part number has been listed as obsolete in distributor records. Ensure RoHS compliance documentation is available if required for your manufacturing process. Cross-reference the exact pinout and thermal characteristics with the latest revision of the datasheet before finalizing procurement.

Selection Notes

Select this component when a compact, high-frequency buck converter is needed for low-voltage mobile applications. The 600mA output current rating suits moderate load requirements without excessive heat dissipation. The 2MHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the 16-SOIC package constraints regarding PCB space and thermal management capabilities during layout design.

Part Context

This device belongs to the MAX8805Y series of step-down converters designed specifically for RF and mixed-signal applications. It integrates a power switch and control circuitry into a single chip to simplify board design. The series is engineered to provide clean power rails for sensitive analog circuits while maintaining high efficiency across varying load conditions.

Replacement Considerations

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