MAX4378FAUD 查看數據表（PDF） - Maxim Integrated
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MAX4378FAUD Datasheet PDF : 9 Pages
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Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal Gain
Table 1. Recommended Component Values
FULL-SCALE LOAD
CURRENT, ILOAD (A)
0.1
CURRENT-SENSE
RESISTOR, RSENSE (mΩ)
1000
1
100
5
20
10
10
VSOURCE
0 TO +28V
+3V TO +28V
VCC
RSENSE
RS+
IRG1
RG1
ILOAD
TO LOAD BATTERY
RS-
MAX4376
RG2
GAIN (+V/V)
20
50
100
20
50
100
20
50
100
20
50
100
BATTERY
RSENSE
A1
FULL-SCALE OUTPUT VOLTAGE
(FULL-SCALE VSENSE = 100mV),
VOUT (V)
2.0
5.0
10.0
2.0
5.0
10.0
2.0
5.0
10.0
2.0
5.0
10.0
+3V TO +28V
VCC
RS1+
RS1-
SYSTEM
AND
CHARGER
OUT1
CURRENT
MIRROR
OUT
VOUT AV = 2, 5,
OUT
OR 10
IRGD
RGD
GND
MAX4377
RS2-
RS2+
OUT2
Figure 1. Functional Diagram
monitor. This is useful for implementing either smart
battery packs or fuel gauges.
Current Source Circuit
Figure 3 shows a block diagram using the MAX4376
with a switching regulator to make a current source.
Figure 2. Bidirectional Current Monitor
8 _______________________________________________________________________________________
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