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General Description

The MAX4372 low-cost, precision, high-side current sense amplifier is available in a tiny, space-saving SOT23-5-pin package. Offered in three gain versions (T = 20V/V, F = 50V/V, and H = 100V/V), this device operates from a single 2.7V to 28V supply and consumes only 30μA. It features a voltage output that eliminates the need for gain-setting resistors and is ideal for today’s notebook computers, cell phones, and other systems where battery/DC current monitoring is critical.

Features

? Low-Cost, Compact Current-Sense Solution

? 30μA Supply Current

? 2.7V to 28V Operating Supply

? 0.18 Full-Scale Accuracy

? 0.3mV Input Offset Voltage

? Low 1.5Ω Output Impedance

? Three Gain Versions Available

?? 20V/V (MAX4372T)

?? 50V/V (MAX4372F)

?? 100V/V (MAX4372H)

? High Accuracy +2V to +28V Common-Mode

?? Range, Functional Down to 0V, Independent of

?? Supply Voltage

? Available in a Space-Saving 5-Pin SOT23 Package

?? and 3 x 2 UCSP? (1mm x 1.5mm) Package

Applications

?? Power-Management Systems

?? General-System/Board-Level Current Monitoring

?? Notebook Computers

?? Portable/Battery-Powered Systems

?? Smart-Battery Packs/Chargers

?? Cell Phones

?? Precision-Current Sources