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MAX4173

更新时间： 2024-11-26 14:57:47
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
10页 485K
描述
低成本、SOT23封装、电压输出、高边电流检测放大器

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MAX4173 数据手册

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MAX4173  
Low-Cost, SOT23, Voltage-Output,  
High-Side Current-Sense Amplifier  
General Description  
Features  
The MAX4173 low-cost, precision, high-side current-  
sense 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 cur-  
rent 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 con-  
nected to a battery in deep discharge. The MAX4173’s  
wide 1.7MHz bandwidth makes it suitable for use inside  
battery charger control loops.  
o Low-Cost, Compact Current-Sense Solution  
o High Accuracy +2V to +28V Common-Mode  
Range, Functional Down to 0V, Independent of  
Supply Voltage  
o Three Gain Versions Available  
+20V/V (MAX4173T)  
+50V/V (MAX4173F)  
+100V/V (MAX4173H)  
o
o
0ꢀ5ꢁ Full-Scale Accuracy  
3mV Input ꢂffset Voltage (MAX4173T)  
o Wide 1ꢀ7MHz Bandwidth (MAX4173T)  
o 420µA Supply Current  
The combination of three gain versions and a user-  
selectable external sense resistor sets the full-scale  
current reading. This feature offers a high level of inte-  
gration, resulting in a simple and compact current-  
sense solution.  
o Available in Space-Saving SꢂT23 Package  
The MAX4173 operates from a single +3V to +28V sup-  
ply, 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  
package.  
Typical Operating Circuit  
I
LOAD  
V
SENSE  
0 TO +28V  
R
SENSE  
Applications  
Notebook Computers  
RS+  
RS-  
+3V TO +28V  
V
CC  
Portable/Battery-Powered Systems  
Smart Battery Packs/Chargers  
Cell Phones  
0.1µF  
MAX4173T/F/H  
Power-Management Systems  
General System/Board-Level Current Monitoring  
PA Bias Control  
A/D  
CONVERTER  
LOAD/  
BATTERY  
OUT  
GND  
Precision Current Sources  
Ordering Information  
PART  
GAIN (V/V)  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
6 SOT23  
8 SO  
SꢂT TꢂP MARK  
MAX4173TEUT+T  
MAX4173TESA+  
MAX4173FEUT+T  
MAX4173FESA+  
MAX4173HEUT+T  
MAX4173HESA+  
20  
20  
AABN  
—
50  
6 SOT23  
8 SO  
AABO  
—
50  
100  
100  
6 SOT23  
8 SO  
AABP  
—
+Denotes a lead(Pb)-free/RoHS-compliant package.  
T = Tape and l.  
Pin Configurations appear at end of data sheetꢀ  
For pricing, delivery, and ordering information, please contact Maxim Direct  
19-1434; Rev 5; 4/11  
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.  
1234567...10

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