High-Side Power and
Current Monitors
Internal Reference (MAX4211)
The MAX4211 features a 1.21V bandgap reference out-
put, stable over supply voltage and temperature.
Typically, the reference output is connected to one of
the comparators ’ inputs. This is the comparison refer-
ence voltage. If a lower reference voltage is needed,
use an external voltage-divider. The reference can
source or sink a load current up to 100μA.
Typical Operating Circuit
+
V SENSE
-
4V TO
28V
+
-
RS+
R SENSE
RS-
LOAD
V CC
2.7V TO
5.5V
+
-
R7
C1
R P
V PULLUP
25:1
1.21V
REFERENCE
IOUT
POUT
REF
R3
INHIBIT
CIN1+
R1
COUT1
CIN1-
V PULLUP
LE
R6
COUT2
MAX4211A
MAX4211B
CIN2+
CIN2-
R2
R4
MAX4211C
GND
R5
______________________________________________________________________________________
21
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相关代理商/技术参数
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