General Description
The MAX4073 low-cost, high-side current-sense amplifier features a voltage output that eliminates the need for gain-setting resistors making it ideal for cell phones, notebook computers, PDAs, and other systems where current monitoring is crucial. High-side current monitoring does not interfere with the ground path of the battery charger making the MAX4073 particularly useful in battery-powered systems. The input common-mode range of +2V to +28V is independent of the supply voltage. The MAX4073’s wide 1.8MHz bandwidth makes it suitable for use inside battery-charger control loops.

Features
♦ Low-Cost, Compact, Current-Sense Solution
♦ Three Gain Versions Available +20V/V (MAX4073T) +50V/V (MAX4073F) +100V/V (MAX4073H)
♦ ±1.0% Full-Scale Accuracy
♦ 500µA Supply Current
♦ Wide 1.8MHz Bandwidth
♦ +3V to +28V Operating Supply
♦ Wide +2V to +28V Common-Mode Range Independent of Supply Voltage
♦ Automotive Temperature Range (-40°C to +125°C)
♦ Available in Space-Saving 5-Pin SC70 Package

Applications
    Cell Phones
    Notebook Computers
    Portable/Battery-Powered Systems
    Smart Battery Packs/Chargers
    PDAs
    Power Management Systems
    PA Bias Control
    General System/Board-Level Current Monitoring
    Precision Current Sources