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MFG:MAXIN
Part Number: MAX4173
MFG: MAXIN
Description: The MAX4173 low-cost, precision, high-side currentsense amplifier is available in a tiny SOT23-6 packa...
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MAX4173
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DataSheet
General Description
MAX4173 General Description
The MAX4173 low-cost, precision, high-side currentsense amplifier is available in a tiny SOT23-6 package. It features a voltage output that eliminates the need for gain-setting resistors and it is ideal for today's notebook computers, cell phones, and other systems where 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 battery in deep discharge. The MAX4173's wide 1.7MHz bandwidth makes it suitable for use inside battery charger control loops.
The combination of three gain versions and a userselectable external sense resistor sets the full-scale current reading. This feature offers a high level of integration, resulting in a simple and compact currentsense solution.
The MAX4173 operates from a single +3V to +28V supply, typically draws only 420µA of supply current over the extended operating temperature range (-40°C to +85°C), and is offered in the space-saving SOT23-6 package.
MAX4173 Maximum Ratings
VCC, RS+, RS- to GND ......................................................... -0.3V to +30V
OUT to GND .............................................................-0.3V to (VCC + 0.3V)
Output Short-Circuit to VCC or GND ...................................... Continuous
Differential Input Voltage (VRS+ - VRS-) ....................................... ±0.3V
Current into Any Pin..................................................................... ±20mA
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)............................. 471mW
SOT23-6 (derate 8.7mW/°C above +70°C)............................... 696mW
Operating Temperature Range ................................... -40°C to +85°C
Storage Temperature Range .................................... -65°C to +150°C
Lead Temperature (soldering, 10sec) ...................................... +300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
MAX4173 Features
·Low-Cost, Compact Current-Sense Solution
·Wide 0 to +28V Common-Mode Range
Independent of Supply Voltage
·Three Gain Versions Available
+20V/V (MAX4173T)
+50V/V (MAX4173F)
+100V/V (MAX4173H)
·±0.5% Full-Scale Accuracy
·420µA Supply Current
·Wide 1.7MHz Bandwidth (MAX4173T)
·+3V to +28V Operating Supply
·Available in Space-Saving SOT23-6 Package
·Wide 0 to +28V Common-Mode Range
Independent of Supply Voltage
·Three Gain Versions Available
+20V/V (MAX4173T)
+50V/V (MAX4173F)
+100V/V (MAX4173H)
·±0.5% Full-Scale Accuracy
·420µA Supply Current
·Wide 1.7MHz Bandwidth (MAX4173T)
·+3V to +28V Operating Supply
·Available in Space-Saving SOT23-6 Package
MAX4173 Typical Application
·Notebook Computers
·Portable/Battery-Powered Systems
·Smart Battery Packs/Chargers
·Cell Phones
·Power-Management Systems
·General System/Board-Level Current Monitoring
·PA Bias Control
·Precision Current Sources
·Portable/Battery-Powered Systems
·Smart Battery Packs/Chargers
·Cell Phones
·Power-Management Systems
·General System/Board-Level Current Monitoring
·PA Bias Control
·Precision Current Sources
MAX4173
PDF/DataSheet Download
- Datasheet: MAX4173
- File Size: 208977 KB
- Manufacturer: Maxim
- Click here to Download
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MAX4173 Relative Products
MAX4172EUA+T
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MAX4172EUA+
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MAX4172ESA+
IC AMP PREC CURRENT-SENSE 8-SOIC
MAX4172ESA
The MAX4172ESA 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, sin...
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