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