MAX4372 UCSP/SOT23, Micropower, Voltage-Output, High-Side, Current-Sense Amplifier


MAX4372 UCSP/SOT23, Micropower, Voltage-Output, High-Side, Current-Sense Amplifier RSS Sample
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Maxim Integrated
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Create a design and simulate using EE-Sim® tools: 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. High-side current monitoring is especially useful in battery-powered systems since it does not interfere with the ground path of the battery charger. The input common-mode range of 0 to 28V is independent of the supply voltage and ensures that the current-sense feedback remains viable even when connected to a 2-cell battery pack in deep discharge. The user can set the full-scale current reading by choosing the device (T, F, or H) with the desired voltage gain and selecting the appropriate external sense resistor. This capability offers a high level of integration and flexibility, resulting in a simple and compact current-sense solution. For higher bandwidth applications, refer to the MAX4173T/F/H data sheet.

* 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

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