Current-Regulating Hot-Swap Controller with
DualSpeed/BiLevel Fault Protection
4  _______________________________________________________________________________________
Typical Operating Characteristics
(Circuit of Figure 7, V
IN
= 5V, R
SENSE
= 100m&, M1 = FDS6670A, C
BOARD
= 470礔, C
GATE
= 0, R
S
= 0, T
A
= +25癈, unless other-
wise noted.)
0
0.3
0.2
0.1
0.5
0.4
0.9
0.8
0.7
0.6
1.0
0
2
4
6
8    10    12    14
SUPPLY CURRENT vs. INPUT VOLTAGE
V
IN
 (V)
ON = V
IN
I
GATE
 = 10礎
ON = GND
-40
-15
10
35
60
85
SUPPLY CURRENT vs. TEMPERATURE
TEMPERATURE (癈)
0
0.3
0.2
0.1
0.5
0.4
0.9
0.8
0.7
0.6
1.0
ON = V
IN
V
IN
 = 12V
V
IN
 = 5V
V
IN
 = 3V
49.0
49.6
49.4
49.2
50.0
49.8
50.8
50.6
50.4
50.2
51.0
0
2
4
6
8    10    12    14
SLOW COMPARATOR THRESHOLD
vs. INPUT VOLTAGE
V
IN
 (V)
T
A
 = -40癈
T
A
 = +25癈
T
A
 = +85癈
0
200
100
400
300
600
500
700
1
10
100
1000
FAST COMPARATOR RESPONSE TIME
vs. OVERDRIVE VOLTAGE
V
D
  mV
V
IN
 = 3V
V
IN
 = 5V
V
IN
 = 12V
18
20
19
22
21
23
24
18
20
19
22
21
23
24
0
6
8
2
4
10    12    14
SLOW COMPARATOR
RESPONSE TIME vs. INPUT VOLTAGE
MAX4370 toc05
V
IN
 (V)
CSPD = 110nF
TIME IN ms
CSPD = 0
TIME IN 祍
190
196
194
192
200
198
108
206
204
202
210
FAST COMPARATOR THRESHOLD
vs. INPUT VOLTAGE
0
2
4
6
8    10    12    14
V
IN
 (V)
T
A
 = -40癈
T
A
 = +25癈
T
A
 = +85癈
400
430
420
410
450
440
490
480
470
460
500
-40   -20    0    20    40    60    80   100
FAST COMPARATOR RESPONSE TIME
vs. TEMPERATURE
TEMPERATURE 癈
V
IN
 = 12V
V
IN
 = 3V
V
OD
 = 10mV
V
IN
 = 5V
250
270
310
290
330
350
0
4
2
6
8    10    12    14
 START-UP TIME
vs. INPUT VOLTAGE
MAX4370 toc09
V   V
25
27
31
29
33
35
C
TIM
 = 100nF
TIME IN ms
C
TIM
= 1nF
TIME IN 祍
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