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Active: In Production.

Description

FULL DATA SHEET (PDF, 116kB) Download   E-Mail The MAX8805W evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) that demonstrates the highly integrated MAX8805W stepdown DC-DC converter optimized for dynamically powering the power amplifier (PA) in WCDMA or NCDMA handsets. The MAX8805W EV kit can dynamically control the step-down output voltage in the 0.32V to VBATT range from a 2.7V to 5.5V input-voltage range, and delivers 650mA of load current in low-power mode. In high-power mode, the step-down output is directly connected to the input by the internal 60mΩ bypass pFET. Two low-noise LDOs are also integrated in the MAX8805W. The MAX8805W EV kit can also evaluate the MAX8805X/MAX8805Y/MAX8805Z. To evaluate the MAX8805X/MAX8805Y/MAX8805Z, order a free sample along with this EV kit.

Key Features

PA Step-Down Converter 7.5µs (typ) Settling Time for 0.8V to 3.4V Output-Voltage Change Dynamic Output-Voltage Setting from 0.32V to VBATT 60mΩ pFET and 100% Duty Cycle for Low Dropout 2MHz or 4MHz Switching Frequency Low Output-Voltage Ripple 650mA Output Drive Capability (MAX8805W/MAX8805X) 600mA Output Drive Capability (MAX8805Y/MAX8805Z) 2% Maximum Accuracy Dual Low-Noise LDOs Low 35µVRMS (typ) Output Noise High 70dB (typ) PSRR Guaranteed 200mA Output Drive Capability Individual ON/OFF Control Tiny External Components Low 0.1µA Shutdown Current 2.7V to 5.5V Supply Voltage Range Thermal Shutdown Tiny 2mm x 2mm x 0.7mm WLP Package (4 x 4 Grid) Fully Assembled and Tested

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