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ISL28005

更新时间： 2024-11-23 05:39:39
品牌 Logo 应用领域
英特矽尔 - INTERSIL 放大器
页数 文件大小 规格书
14页 746K
描述
Micropower, Rail-to-Rail Input Current Sense Amplifier with Voltage Output

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ISL28005 数据手册

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Micropower, Rail-to-Rail Input Current Sense  
Amplifier with Voltage Output  
ISL28005  
Features  
• Low Power Consumption . . . . . . . . . . . 50µA,Typ  
• Supply Range. . . . . . . . . . . . . . . . . . 2.7V to 28V  
• Wide Common Mode Input . . . . . . . . . 0V to 28V  
• Fixed Gain Versions  
- ISL28005-100. . . . . . . . . . . . . . . . . . . 100V/V  
- ISL28005-50. . . . . . . . . . . . . . . . . . . . . 50V/V  
- ISL28005-20. . . . . . . . . . . . . . . . . . . . . 20V/V  
The ISL28005 is a micropower, uni-directional  
high-side and low-side current sense amplifier  
featuring a proprietary rail-to-rail input current sensing  
amplifier. The ISL28005 is ideal for high-side current  
sense applications where the sense voltage is usually  
much higher than the amplifier supply voltage. The  
device can be used to sense voltages as high as 28V  
when operating from a supply voltage as low as 2.7V.  
The micropower ISL28005 consumes only 50µA of supply  
current when operating from a 2.7V to 28V supply.  
• Operating Temperature Range . . -40°C to +125°C  
• Package . . . . . . . . . . . . . . . . . . . . .5 Ld SOT-23  
The ISL28005 features a common-mode input voltage  
range from 0V to 28V. The proprietary architecture  
extends the input voltage sensing range down to 0V,  
making it an excellent choice for low-side ground sensing  
applications. The benefit of this architecture is that a high  
degree of total output accuracy is maintained over the  
entire 0V to 28V common mode input voltage range.  
Applications*(see page 13)  
• Power Management/Monitors  
• Power Distribution and Safety  
• DC/DC, AC/DC Converters  
• Battery Management /Charging  
• Automotive Power Distribution  
The ISL28005 is available in fixed (100V/V, 50V/V and  
20V/V) gains in the space saving 5 Ld SOT-23 package.  
The parts operate over the extended temperature range  
from -40°C to +125°C.  
Related Literature*(see page 13)  
• See AN1531 for “ISL28005 Evaluation Board User’s  
Guide”  
Typical Application  
High-Side And Low-Side  
Threshold Voltage  
SENSE  
+12VDC  
OUTPUT  
+12VDC  
1.8  
R
V
SENSE  
RS+  
+5VDC  
-
1.6  
1.4  
I
SENSE  
ISL28005  
+12VDC  
+
V
V
= 1.52V  
TH(L-H)  
SENSE  
+5VDC  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
+5VDC  
OUTPUT  
V
= 1.23V  
TH(H-L)  
R
SENSE  
SENSE  
-
+5VDC  
I
(G=100)  
SENSE  
ISL28005  
OUT  
+5VDC  
+
SENSE  
G100, V  
= 1V  
OUT  
+1.0VDC  
OUTPUT  
+1.0VDC  
G50, V  
G20, V  
= 500mV  
= 200mV  
OUT  
OUT  
R
+5VDC  
-
MULTIPLE  
I
SENSE  
+1.0VDC  
ISL28005  
OUTPUT  
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0  
TIME (ms)  
POWER SUPPLY  
+
GND  
May 27, 2010  
FN6973.2  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright Intersil Americas Inc. 2009, 2010. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  
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