Datasheet

MAX4376/MAX4377/MAX4378
Single/Dual/Quad, High-Side Current-Sense
Amplifiers with Internal Gain
8
Maxim Integrated
R
SENSE
V
SOURCE
0 TO +28V
+3V TO +28V
RGD
V
OUT
I
RG1
I
RGD
I
LOAD
R
G1
R
G2
RS-RS+
OUT
GND
TO LOAD BATTERY
V
CC
CURRENT
MIRROR
A1
MAX4376
A
V
= 2, 5,
OR 10
OUT
Figure 1. Functional Diagram
R
SENSE
+3V TO +28V
V
CC
BATTERY
MAX4377
SYSTEM
AND
CHARGER
OUT2
RS1+
RS1-
OUT1
RS2-
RS2+
Figure 2. Bidirectional Current Monitor
FULL-SCALE LOAD
CURRENT, I
LOAD
(A)
CURRENT-SENSE
RESISTOR, R
SENSE
(mΩ)
GAIN (+V/V)
FULL-SCALE OUTPUT VOLTAGE
(FULL-SCALE V
SENSE
= 100mV),
V
OUT
(V)
0.1 1000 20 2.0
50 5.0
100 10.0
1 100 20 2.0
50 5.0
100 10.0
5 20 20 2.0
50 5.0
100 10.0
10 10 20 2.0
50 5.0
100 10.0
Table 1. Recommended Component Values