Datasheet

C1
R
SENSE
POWER
SWITCH
INDUCTIVE
LOAD
24V
-+
+IN
-IN
+
-
Preamplifier
Output Buffer
Gain = K2
A1
A2
Gain = 10
OFFSET
Internal
Resistor
100 k:
OUT
Level
shift
1
5
3
4
7
8
LMP8601, LMP8601-Q1
www.ti.com SNOSAR2E –SEPTEMBER 2008–REVISED MARCH 2013
HIGH SIDE CURRENT SENSING APPLICATION
Figure 42 illustrates the application of the LMP8601/LMP8601Q in a high side sensing application. This
application is similar to the low side sensing discussed above, except in this application the common mode
voltage on the shunt drops below ground when the driver is switched off. Because the common mode voltage
range of the LMP8601/LMP8601Q extends below the negative rail, the LMP8601/LMP8601Q is also very well
suited for this application.
K2 = 2
Figure 42. High Side Current Sensing Application
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