MAX4173

PRODUCTION

Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier

Data Sheet (Rev. 5) Product Selection Table
Part Models
12
1ku List Price
Starting From $1.35
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Part Details

  • Low-Cost, Compact Current-Sense Solution
  • High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage
  • Three Gain Versions Available
    • +20V/V (MAX4173T)
    • +50V/V (MAX4173F)
    • +100V/V (MAX4173H)
  • ±0.5% Full-Scale Accuracy
  • ±3mV Input Offset Voltage (MAX4173T)
  • Wide 1.7MHz Bandwidth (MAX4173T)
  • 420µA Supply Current
  • Available in Space-Saving SOT23 Package
MAX4173
Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense Amplifier
MAX4173F, MAX4173H, MAX4173T: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 2

Technical Articles 2

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Evaluation Kits

MAX4173EVKIT

Evaluation Kit for the MAX4173

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Features and Benefits

  • Real-Time Current Monitoring
  • Wide 0 to 28V Input Common-Mode Range Independent of Operating Supply Voltage
  • ±0.5% Full-Scale Accuracy
  • Lead(Pb)-Free and RoHS Compliant
  • Fully Assembled and Tested

Product Details

The MAX4173 evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that contains a MAX4173TEUT+. The MAX4173 is a high-side, current-sense amplifier with an input common-mode voltage range that extends from 0 to 28V. The current-sense amplifier provides an analog voltage output proportional to the load current flowing through an external sense resistor.

The 20V/V gain version of the MAX4173 (MAX4173TEUT+) and a 150mΩ sense resistor are installed on the board. Other gain versions of the MAX4173 can be evaluated by replacing the MAX4173TEUT+ with a MAX4173FEUT+ (50V/V) or a MAX4173HEUT+ (100V/V) and a user-supplied, external sense resistor. The user can easily match the full-scale sense voltage to the required output-voltage range.

Applications

  • Cell Phones
  • General System/Board-Level Current Monitoring
  • Notebook Computers
  • PA Bias Control
  • Portable Battery-Powered Systems
  • Power-Management Systems
  • Precision Current Sources
  • Smart Battery Packs/Chargers
MAX4173EVKIT
Evaluation Kit for the MAX4173

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