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