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參數資料
| 型號： | LTCWK |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 36V Low Cost High Side Current Sense in a SOT-23 |
| 中文描述： | 36V的低成本高端電流檢測采用SOT - 23 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 248K |
| 代理商： | LTCWK |
LT6106
1
6106fa
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
36V Low Cost High Side
Current Sense in a SOT-23
The LT
6106 is a versatile high side current sense ampli-
fier. Design flexibility is provided by the excellent device
characteristics: 250μV maximum offset and 40nA maxi-
mum input bias current. Gain for each device is set by two
resistors and allows for accuracy better than 1%.
The LT6106 monitors current via the voltage across an
external sense resistor (shunt resistor). Internal circuitry
converts input voltage to output current, allowing for a
small sense signal on a high common mode voltage to
be translated into a ground referenced signal. The low DC
offset allows for monitoring very small sense voltages. As
a result, a small valued shunt resistor can be used, which
minimizes the power loss in the shunt.
The wide 2.7V to 44V input voltage range, high accuracy
and wide operating temperature range make the LT6106
ideal for automotive, industrial and power management
applications. The very low power supply current of the
LT6106 also makes it suitable for low power and battery
operated applications.
■
Gain Configurable with Two Resistors
■
Low Offset Voltage: 250μV Maximum
■
Output Current: 1mA Maximum
■
Supply Range: 2.7V to 36V, 44V Absolute Maximum
■
Low Input Bias Current: 40nA Maximum
■
PSRR: 106dB Minimum
■
Low Supply Current: 65μA Typical, V
+
= 12V
■
Operating Temperature Range: –40°C to 125°C
■
Low Profile (1mm) ThinSOT
TM
Package
■
Current Shunt Measurement
■
Battery Monitoring
■
Power Management
■
Motor Control
■
Lamp Monitoring
■
Overcurrent and Fault Detection
LT6106
1k
V
200mV/A
6106 TA01a
100Ω
3V TO 36V
LOAD
0.02Ω
–
+
V
+
V
–
OUT
–IN
+IN
3V to 36V, 5A Current Sense with A
V
= 10
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Measurement Accuracy vs Load Current
LOAD CURRENT (A)
0
–1.2
A
–1.0
–0.6
–0.4
–0.2
2
4
5
0.6
6106 TA01b
–0.8
1
3
0
0.2
0.4
LIMIT OVER TEMPERATURE
LIMIT OVER TEMPERATURE
TYPICAL PART AT T
A
= 25°C
5A FULL SCALE
R
SENSE
= 0.02Ω
A
V
R
IN
= 100Ω
R
OUT
= 1k
V
+
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