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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Micropower, Rail to Rail Input Current Sense Amplifier with
Voltage Output
ISL28006
The ISL28006 is a micropower, uni-directional high-side and
low-side current sense amplifier featuring a proprietary
rail-to-rail input current sensing amplifier. The ISL28006 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 ISL28006 consumes only 50A of supply current
when operating from a 2.7V to 28V supply.
The ISL28006 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.
The ISL28006 is available in fixed (100V/V, 50V/V, 20V/V and
Adjustable) gains in the space saving 5 Ld SOT-23 package
and the 6 Ld SOT-23 package for the adjustable gain part. The
parts operate over the extended temperature range from
-40°C to +125°C.
Features
Low Power Consumption. . . . . . . . . . . . . . . . . . . . . . 50A, Typ
Supply Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.7V to 28V
Wide Common Mode Input. . . . . . . . . . . . . . . . . . . . 0V to 28V
Gain Versions
- ISL28006-100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100V/V
- ISL28006-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50V/V
- ISL28006-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V/V
- ISL28006-ADJ . . . . . . . . . . . . . . . . ADJ (Min Gain = 20V/V)
Operating Temperature Range . . . . . . . . . . . . -40°C to +125°C
Packages. . . . . . . . . . . . . . . . . . . . . .5 Ld SOT-23, 6 Ld SOT-23
Applications
Power Management/Monitors
Power Distribution and Safety
DC/DC, AC/DC Converters
Battery Management/Charging
Automotive Power Distribution
Related Literature
See
AN1532 for “ISL28006 Evaluation Board User’s Guide”
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. GAIN ACCURACY vs VRS+ = 0V TO 28V
ISL28006
GND
ISL28006
+5VDC
+12VDC
+
-
+1.0VDC
SENSE
OUTPUT
+5VDC
OUTPUT
+12VDC
OUTPUT
MULTIPLE
OUTPUT
POWER SUPPLY
ISENSE
+12VDC
ISENSE
+5VDC
ISENSE
+1.0VDC
+
-
+
-
RSENSE
+5VDC
RSENSE
0
2468 10 12 14 16 18 20 22 24 26 28
ACCURACY
(%
)
-1.4
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
VRS+ (V)
+100°C
+25°C
-40°C
+125°C
GAIN 100
November 22, 2013
FN6548.6