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MAX4372TESA Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX4372TESA Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 8 page For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. General Description The MAX4372 low-cost, precision, high-side current- sense amplifier is available in a tiny, space-saving SOT23-5 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 con- sumes only 30µA. It features a voltage output that elimi- nates 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 bat- tery-powered systems since it does not interfere with the ground path of the battery charger. The input com- mon-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 volt- age gain and selecting the appropriate external sense resistor. This capability offers a high level of integration and flexibility, resulting in a simple and compact cur- rent-sense solution. For higher bandwidth applications, refer to the MAX4173T/F/H data sheet. 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 Features o Low-Cost, Compact Current-Sense Solution o 30µA Supply Current o +2.7V to +28V Operating Supply o 0.18% Full-Scale Accuracy o Low 1.5 Ω Output Impedance o Three Gain Versions Available +20V/V (MAX4372T) +50V/V (MAX4372F) +100V/V (MAX4372H) o Wide 0 to +28V Common-Mode Range, Independent of Supply Voltage o Available in Space-Saving SOT23-5 Package Low-Cost, SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output ________________________________________________________________ Maxim Integrated Products 1 RS+ 15 RS- MAX4372T/F/H SOT23-5 TOP VIEW 2 34 RS- N.C. OUT 1 2 8 7 RS+ N.C. N.C. GND VCC SO 3 4 6 5 MAX4372T/F/H OUT VCC GND 19-1548; Rev 0; 10/99 PART MAX4372TEUK-T MAX4372TESA MAX4372FEUK-T -40°C to +85°C -40°C to +85°C -40°C to +85°C TEMP. RANGE PIN-PACKAGE 5 SOT23-5 8 SO 5 SOT23-5 Pin Configurations Ordering Information TOP MARK ADIU — ADIV MAX4372FESA MAX4372HEUK-T MAX4372HESA -40°C to +85°C -40°C to +85°C -40°C to +85°C 8 SO 5 SOT23-5 8 SO — ADIW — RS- OUT A/D CONVERTER VCC VCC GND RS+ RSENSE VSENSE ILOAD VIN 0 TO 28V +2.7V TO +28V 0.1 µF MAX4372T/F/H LOAD/ BATTERY Typical Operating Circuit Note: Gain values are as follows: +20V/V for the T version, +50V/V for the F version, and +100V/V for the H version. |
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