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MAX4172 - Low-Cost / Precision / High-Side Current-Sense Amplifier

General Description

The MAX4172 is a low-cost, precision, high-side currentsense amplifier for portable PCs, telephones, and other systems where battery/DC power-line monitoring is critical.

Key Features

  • o Low-Cost, High-Side Current-Sense Amplifier o ±0.5% Typical Full-Scale Accuracy Over Temperature o 3V to 32V Supply Operation o 0V to 32V Input Range.
  • Independent of Supply Voltage o 800kHz Bandwidth [VSENSE = 100mV (1C)] 200kHz Bandwidth [VSENSE = 6.25mV (C/16)] o Available in Space-Saving µMAX and SO Packages MAX4172 ______________Ordering Information PART MAX4172ESA MAX4172EUA TEMP. RANGE -40°C to +85°C -40°C to +85°C PIN-.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-1184; Rev 0; 12/96 Low-Cost, Precision, High-Side Current-Sense Amplifier _______________General Description The MAX4172 is a low-cost, precision, high-side currentsense amplifier for portable PCs, telephones, and other systems where battery/DC power-line monitoring is critical. High-side power-line monitoring is especially useful in battery-powered systems, since it does not interfere with the battery charger’s ground path. Wide bandwidth and ground-sensing capability make the MAX4172 suitable for closed-loop battery-charger and generalpurpose current-source applications. The 0V to 32V input common-mode range is independent of the supply voltage, which ensures that current-sense feedback remains viable, even when connected to a battery in deep discharge.