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0V to 16V, Dual Hot-Swap Controller with 10-Bit
Current and Voltage Monitor and 4 LED Drivers
Typical Operating Characteristics (continued)
(V IN = 3.3V, T A = +25 N C, unless otherwise noted.)
I LOAD
5A/div
TURN-OFF WAVEFORM
(FAST COMPARATOR
FAULT/SHORT-CIRCUIT RESPONSE)
MAX5970 toc12
16
14
12
VOLTAGE BUFFER vs. TIME
CIRCULAR BUFFER CONTENT AT SLOW-TRIP
FAULT MON = 16V, CURRENT SENSE = 50mV
I LOAD
2A/div
SLOW-COMPARATOR FAULT EVENT
MAX5970 toc14
V GATE_
10V/div
V MON_
10V/div
10
8
6
4
V GATE_
10V/div
V MON_
10V/div
FAULT_
5V/div
100μs/div
2
0
-2.5 -2.0 -1.5 -1.0 -0.5 0
0.5 1.0 1.5 2.0 2.5
V FAULT
5V/div
400μs/div
TIME (ms)
1.0
0.8
VOLTAGE ADC ACCURACY
vs. MON_ VOLTAGE
MON_ VOLTAGE RANGE = 4V
5
4
CURRENT ADC ACCURACY
vs. (V SENSE_ - V MON_ )
10
9
CURRENT BUFFER vs. TIME
DEFAULT SETTING
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
3
2
1
0
-1
-2
-3
-4
8
7
6
5
4
3
2
1
-1.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-5
0
2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0
0
-2.5 -2.0 -1.5 -1.0 -0.5 0
0.5 1.0 1.5 2.0 2.5
V MON_ (V)
(V SENSE_ - V MON_ ) (mV)
TIME (ms)
0.5
0.4
0.3
0.2
0.1
VOLTAGE BUFFER vs. TIME
VOLTAGE DATA AT SHORT CIRCUIT ON
POWER-UP DEFAULT SETTING V MON = 16V
V ON_
5V/div
I LOAD
5A/div
STARTUP INTO SHORT LOAD
MAX5970 toc19
200
180
160
140
120
INPUT LEAKAGE CURRENT
vs. MON_ VOLTAGE
I MON_
0
100
-0.1
-0.2
-0.3
-0.4
V GATE
2V/div
V MON_
1V/div
FAULT_
80
60
40
20
I SENSE_
-0.5
-2.5 -2.0 -1.5 -1.0 -0.5 0
0.5 1.0 1.5 2.0 2.5
5V/div
4ms/div
0
0
2
4
6
8
10
12
14
16
TIME (ms)
V MON_ (V)
_______________________________________________________________________________________
7
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