Current-Regulating Hot-Swap Controller with
DualSpeed/BiLevel Fault Protection
6  _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(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.)
C
BOARD
 = 0, R
SENSE
 = 100m&,
=
=
I
LOAD
(1A/div)
V
OUT
(2V/div)
V
GATE
(2V/div)
0
50祍/div
TURN-OFF TIME (C
BOARD
 = 0)
MAX4370-19
ON
A
0V
C
BOARD
 = 470礔, R
SENSE
 = 100m&,
= 22nF R =
I
LOAD
(1A/div)
V
OUT
2V/div)
V
GATE
2V/div)
0A
0V
200祍/div
TURN-OFF TIME
 (EXTERNAL C
GATE
 = 22nF, C
BOARD
 = 470礔)
MAX4370-20
ON
0.01
0.1
1
10
100
1000
TIME TO CHARGE GATE
vs. C
GATE
C
GATE
 (nF)
1000
0.001
0.01
1
0.1
100
10
NO EXTERNAL MOSFET
V
IN
 = 12V
TO V
GATE
= 17V
V
IN
 = 5V
TO V
GATE
= 10V
V
IN
 = 3V
TO V
GATE
= 6V
0.01
0.1
1
10
100
1000
TIME TO DISCHARGE GATE
vs. C
GATE
C
GATE
 (nF)
  1000
0.001
1
0.1
0.01
10
100
V
IN
 = 12V
V
IN
 = 5V
V
IN
 = 3V
DISCHARGE TO V
GATE
=0.1V
NO EXTERNAL MOSFET
0.595
0.597
0.601
0.599
0.603
0.605
0
4
2
6
8    10    12    14
ON COMPARATOR THRESHOLD
vs. INPUT VOLTAGE
V
IN
 (V)
RISING
FALLING
0.5950
0.6000
0.5975
0.6050
0.6025
0.6075
0.6100
-40
35
60
-15
10
85
ON COMPARATOR THRESHOLD
vs. TEMPERATURE
TEMPERATURE (癈)
}
}
V
IN
 = 12V
V
IN
 = 5V
V
IN
 = 3V
2.30
2.40
2.35
2.50
2.45
2.55
2.60
-40
35
60
-15
10
85
UVLO THRESHOLD VOLTAGE
vs. TEMPERATURE
TEMPERATURE 癈
RISING
FALLING
140
145
150
155
160
UVLO DELAY vs. TEMPERATURE
TEMPERAT RE ?/DIV>
-40
35
60
-15
10
85
V
IN
 = 3V
V
IN
 = 5V & 12V
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