MAX4372
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MAX4372

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

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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
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file View Data Sheet (Rev.5)
Documentation View All Documentation
Part Models 18
1ku List Price Starting From $1.09
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MAX4372

Documentation

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Data Sheet

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UPDATED 09/15/2011
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MAX4372-MAX4372T: Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output Data Sheet (Rev.5)

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UPDATED 01/01/1900
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2104: 低成本、UCSP/SOT23封装、微功耗、高边电流检测放大器，带有电压输出 Data Sheet

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Reliability Data

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UPDATED 01/12/2023
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MAX4372 Reliability Data redirect icon

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Technical Articles

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UPDATED 04/08/2009
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Protect Current-Sense Amplifiers Against Overvoltage Transients redirect icon

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UPDATED 07/08/2009
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检流放大器的瞬态过压保护 redirect icon

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UPDATED 07/10/2009
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過電圧トランジェントに対する電流検出アンプの保護 redirect icon

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UPDATED 01/03/2007
English
Performance of Current-Sense Amplifiers with Input Series Resistors redirect icon

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UPDATED 04/20/2007
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带有输入串联电阻的电流检测放大器的性能 redirect icon

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UPDATED 04/05/2007
Japanese
入力直列抵抗付き電流検出アンプの性能 redirect icon

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UPDATED 11/19/2001
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High-Side Current-Sense Measurement: Circuits and Principles redirect icon

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UPDATED 05/26/2015
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高边电流检测测量:电路和原理 redirect icon

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UPDATED 11/19/2001
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ハイサイドの電流検出、その原理と回路の実装方法を解き明かす redirect icon

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UPDATED 04/09/2013
English
DC Error Budget Calculator Simplifies Selection of Optimal Current-Sense Amplifiers redirect icon

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UPDATED 04/09/2013
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直流误差计算器简化检流放大器的优化 redirect icon

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UPDATED 06/29/2010
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Ultra-Small UCSP™ Devices Improve Battery Management in Portable Applications redirect icon

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UPDATED 10/18/2010
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超小型UCSP™封装器件改善便携设备的电池管理\r\n redirect icon

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UPDATED 03/01/2001
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High-Accuracy Current-Sense Amplifier Enables Current Sensing and Current Sharing redirect icon

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Documentation

Technical Documents 8
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Data Sheet 1

MAX4372-MAX4372T: Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output Data Sheet (Rev.5)

Reliability Data 1

MAX4372 Reliability Data

Design Note 2

Ultra-Small UCSP™ Devices Improve Battery Management in Portable Applications
High-Accuracy Current-Sense Amplifier Enables Current Sensing and Current Sharing

Technical Articles 4

Protect Current-Sense Amplifiers Against Overvoltage Transients
Performance of Current-Sense Amplifiers with Input Series Resistors
High-Side Current-Sense Measurement: Circuits and Principles
DC Error Budget Calculator Simplifies Selection of Optimal Current-Sense Amplifiers

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX4372FEBT+ 6-WLCSP-N/A external-link
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MAX4372FEBT+T 6-WLCSP-N/A external-link
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MAX4372FESA+ Small-Outline IC, Narrow (0.15in) external-link
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MAX4372FESA+T Small-Outline IC, Narrow (0.15in) external-link
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MAX4372FEUK+ 5-SOT_23-N/A external-link
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MAX4372FEUK+T 5-SOT_23-N/A external-link
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MAX4372HEBT+ 6-WLCSP-N/A external-link
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MAX4372HEBT+T 6-WLCSP-N/A external-link
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MAX4372HESA+ Small-Outline IC, Narrow (0.15in) external-link
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MAX4372HESA+T Small-Outline IC, Narrow (0.15in) external-link
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MAX4372HEUK+ 5-SOT_23-N/A external-link
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MAX4372HEUK+T 5-SOT_23-N/A external-link
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MAX4372TEBT+ 6-WLCSP-N/A external-link
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MAX4372TEBT+T 6-WLCSP-N/A external-link
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MAX4372TESA+ Small-Outline IC, Narrow (0.15in) external-link
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MAX4372TESA+T Small-Outline IC, Narrow (0.15in) external-link
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MAX4372TEUK+ 5-SOT_23-N/A external-link
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MAX4372TEUK+T 5-SOT_23-N/A external-link
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Software & Part Ecosystem

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

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MAX9928EVKIT
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
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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

Evaluation Kits1

MAX9928EVKIT

Evaluation Kit for the MAX9928F, MAX9929F, and MAX4372

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