MAX4372
Info : RECOMMENDED FOR NEW DESIGNS
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MAX4372

Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 18
1ku List Price Starting From $1.09
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
Additional Details
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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.

Applications

  • Cell Phones
  • General-System/Board-Level Current Monitoring
  • Notebook Computers
  • Portable Battery-Powered Systems
  • Power-Management Systems
  • Precision-Current Sources
  • Smart-Battery Packs/Chargers
Part Models 18
1ku List Price Starting From $1.09

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Jul 19, 2016

- 1594_AMENDED

ASSEMBLY

MAX4372FEBT+T

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MAX4372HEBT+T

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MAX4372TEBT+T

PRODUCTION

Dec 8, 2015

- 1594_PRE-PCN

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MAX4372FEBT+T

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MAX4372TEBT+T

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Oct 30, 2020

- 1702R2

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MAX4372FESA+

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MAX4372TESA+T

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Feb 5, 2015

- 1370_CANCELLATION

ASSEMBLY

MAX4372FEUK+

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MAX4372HEUK+T

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May 22, 2018

- 1702N

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MAX4372HESA+

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MAX4372HESA+T

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Filter by Model

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Part Models

Product Lifecycle

PCN

Jul 19, 2016

- 1594_AMENDED

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ASSEMBLY

MAX4372FEBT+T

PRODUCTION

MAX4372HEBT+T

PRODUCTION

MAX4372TEBT+T

PRODUCTION

Dec 8, 2015

- 1594_PRE-PCN

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WAFER FAB

MAX4372FEBT+T

PRODUCTION

MAX4372TEBT+T

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Oct 30, 2020

- 1702R2

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ASSEMBLY

MAX4372FESA+

PRODUCTION

MAX4372FESA+T

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MAX4372TESA+

PRODUCTION

MAX4372TESA+T

PRODUCTION

Feb 5, 2015

- 1370_CANCELLATION

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ASSEMBLY

MAX4372FEUK+

PRODUCTION

MAX4372HEUK+T

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May 22, 2018

- 1702N

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MAX4372HESA+

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MAX4372HESA+T

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX9928EVKIT

Evaluation Kit for the MAX9928F, MAX9929F, and MAX4372

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MAX9928EVKIT

Evaluation Kit for the MAX9928F, MAX9929F, and MAX4372

Evaluation Kit for the MAX9928F, MAX9929F, and MAX4372

Features and Benefits

  • Precision Real-Time Current Monitoring
  • -0.1V to +28V Input Common-Mode Range
  • Evaluates MAX9928F, MAX9929F, and MAX4372
  • VOS < 0.4mV; Gain Error < 1%
  • SIGN Bit to Show Charge/Discharge Current Flow
  • Lead(Pb)-Free and RoHS Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX9928 evaluation kit (EV kit) provides a proven design to evaluate the MAX9928 uni-/bidirectional, high-side, current-sense amplifier, which offers precision accuracy specifications of VOS < 400µV and gain error < 1.0%. This EV kit demonstrates the MAX9928F in an ultra-small, 1mm x 1.5mm x 0.6mm, 6-bump UCSP™ package. The MAX9928 is also available in an 8-pin µMAX®, but that package is not compatible with this EV kit.

The MAX9928 EV kit PCB comes with a MAX9928FABT+ installed, which is the 5µA/mV gain version. The MAX9928 EV kit can also be used to evaluate the MAX9929F (50V/V). This EV kit can also evaluate the MAX4372 in a footprint-compatible UCSP package. Contact the factory for free samples of the pin-compatible MAX9929FABT+ device.

Applications

  • General-System/Board-Level Current Monitoring
  • Monitoring Charge/Discharge Currents in Portable/Battery-Powered Systems
  • Notebook Computers
  • Precision Current Sources
  • Smart-Battery Packs/Chargers
  • Smart-Cell Phones
  • Super Capacitor Charge/Discharge

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