Datasheet

MAX4373/MAX4374/MAX4375
Low-Cost, Micropower, High-Side Current-Sense
Amplifier + Comparator + Reference ICs
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
RS+
= +12V, V
CC
= +12V, R
LOAD
= 1MΩ, V
RESET
= 0V, V
SENSE
= 100mV, V
PULL-UP
= +5V, R
PULL-UP
= 10kΩ, T
A
= +25°C, unless
otherwise noted.)
0.8
1.2
1.0
1.6
1.4
1.8
2.0
010155 202530
COMPARATOR RESET VOLTAGE
vs. SUPPLY VOLTAGE
MAX4373 toc27
SUPPLY VOLTAGE (V)
RESET VOLTAGE (V)
0
20
10
50
40
30
80
70
60
90
0 0.6 0.80.2 0.4 1.0 1.2 1.4 1.6
COMPARATOR V
OL
vs. I
SINK
MAX4373 toc28
I
SINK
(mA)
V
OL
(mV)
INPUT
OUTPUT
10µs/div
0
5V
750mV
250mV
COMPARATOR AC RESPONSE
MAX4373 toc31
0
0.2
0.6
0.4
0.8
1.0
-60 -20 0-40 20406080100
TOTAL OUTPUT ERROR
vs. TEMPERATURE
MAX4373 toc33
TEMPERATURE (°C)
TOTAL OUTPUT ERROR (%)
0
10
30
20
50
60
40
70
-60 -20 0-40 20406080100
SUPPLY CURRENT
vs. TEMPERATURE
MAX4373 toc32
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
MAX4374
MAX4375
MAX4373
V
SENSE
= 5mV
595
597
596
599
598
601
600
602
604
603
605
-60 -20 0-40 20406080100
COMPARATOR TRIP POINT
vs. TEMPERATURE
MAX4373 toc35
TEMPERATURE (°C)
COMPARATOR TRIP POINT (mV)
0
0.2
0.6
0.4
0.8
1.0
-60 -20 0-40 20406080100
GAIN ACCURACY
vs. TEMPERATURE
MAX4373 toc34
TEMPERATURE (°C)
GAIN ACCURACY (%)
A
V
= +20V/V, +50V/V
A
V
= +100V/V