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MAX4372F, MAX4372H, MAX4372T
Low-Cost, UCSP/SOT23, Micropower, High-Side Current-Sense Amplifier with Voltage Output


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 644kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
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.

An evaluation kit is available:  MAX9928EVKIT  

Key Features   Applications/Uses
  • 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)
  • Wide 0 to 28V Common-Mode Range, Independent of Supply Voltage
  • Available in a Space-Saving 5-Pin SOT23 Package and 3 x 2 UCSP™ (1mm x 1.5mm) Package

 
  		• Cell Phones
  		• General-System/Board-Level Current Monitoring
  		• Notebook Computers
  		• Portable Battery-Powered Systems
  		• Power-Management Systems
  		• Precision-Current Sources
  		• Smart-Battery Packs/Chargers

    Key Specifications:  Current Sense Amplifiers
    Part Number CMVR
    (V)    		 CMVR
    (V)    		 VCC
    (V)    		 VCC
    (V)    		 ICC
    (µA)    		 Bi-Dir. Curr. Sense VSENSE_FS
    (mV)    		 VOS @25°C
    (µV)    		 Gain Gain Accuracy @25°C
    (%)    		 BW
    (kHz)    		 Comp-
    arators    		 Package/Pins Oper. Temp.
    (°C)    		 Price
    min max min max typ recomm. max max @ -3dB See Notes
    MAX4372  0 28 2.7 28 30 No
    100
    150
    		 1300
    20 V/V
    50 V/V
    100 V/V
    		 2.5
    110
    200
    275
    		 0
    SOIC(N)/8
    SOT/5
    UCSP/5
    		 -40 to +85 $0.75 @1k
    See All Current Sense Amplifiers (26)

    Diagram
    MAX4372, MAX4372F, MAX4372H, MAX4372T: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 746: High-Side Current-Sense Measurement: Circuits and Principles - MAX4372
  		• Application Note 1180: High-Accuracy Current-Sense Amplifier Enables Current Sensing and Current Sharing - MAX4372
  		• Application Note 3888: Performance of Current-Sense Amplifiers with Input Series Resistors - MAX4372
  		• Application Note 4438: Protect Current-Sense Amplifiers Against Overvoltage Transients - MAX4372

    Evaluation Kits
  		• MAX9928EVKIT

    Design Guides
  		• Amplifiers and Sensors (PDF)

    Reliability Reports
  		• Reliability Report: MAX4372T.pdf MAX4372F.pdf MAX4372H.pdf
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
  		• MAX4372F Macromodel
  		• MAX4372FPSRR Test Circuit File
  		• MAX4372FLTR Test Circuit File
  		• MAX4372FGBW Test Circuit File
  		• MAX4372F Orcad Library
  		• MAX4372H Orcad Library
  		• MAX4372HPSRR Test Circuit File
  		• MAX4372HLTR Test Circuit File
  		• MAX4372HGBW Test Circuit File
  		• MAX4372H Macromodel
  		• MAX4372T Macromodel
  		• MAX4372T Orcad Library
  		• MAX4372TGBW Test Circuit File
  		• MAX4372TLTR Test Circuit File
  		• MAX4372TPSRR Test Circuit File

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-31 of 31

    MAX4372F Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4372FESA  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372FESA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX4372FESA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372FESA+T    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372FEUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372FEUK  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372FEUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372FEUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372FEBT+T    
    		Active UCSP;5 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372FEBT-T    
    		Active UCSP;5 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372H Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4372HESA+T    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372HESA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372HESA  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372HESA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX4372HEUK-TG05    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372HEUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372HEUK  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372HEUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372HEUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372HEBT+T    
    		Active UCSP;5 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372HEBT-T    
    		Active UCSP;5 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372T Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4372TESA  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372TESA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX4372TESA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372TESA+T    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372TEUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372TEUK  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372TEUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4372TEUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372TEBT-T    
    		Active UCSP;5 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4372TEBT+T    
    		Active UCSP;5 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• Topmark Coding: MAX4372
  		• New Product Press Release 1999-10-27 

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    Document Ref.: 19-1548; Rev 3; 2006-02-21
    This page last modified: 2009-09-18


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