lt1641-2 Linear Technology Corporation, lt1641-2 Datasheet - Page 3

• Manufacturer Part Number: lt1641-2
• Description: Lt1641-2 - Positive High Voltage Hot Swap Controllers
• Manufacturer: Linear Technology Corporation

AC ELECTRICAL CHARACTERISTICS
SYMBOL
t
t
t
t
t
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
TYPICAL PERFOR A CE CHARACTERISTICS
PHLON
PLHON
PHLFB
PLHFB
PHLSENSE
1.335
1.330
1.325
1.320
1.315
1.310
1.305
1.300
1.295
1.290
1.285
1.280
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
–50
I
CC
FB Pin High Voltage Threshold vs
Temperature
V
vs V
CC
–25
20
= 48V
CC
PARAMETER
ON Low to GATE Low
ON High to GATE High
FB Low to PWRGD Low
FB High to PWRGD High
(V
TEMPERATURE (°C)
CC
0
40
– SENSE) High to GATE Low
V
CC
(V)
25
60
50
W
80
85°C
25°C
–45°C
75
1641-1 G01
1641-1 G04
100
U
100
3.0
2.5
2.0
1.5
1.0
0.5
0
0.100
0.095
0.090
0.085
0.080
0.075
0.070
0.065
0.060
0.055
0.050
0.045
0.040
–50
I
CC
CONDITIONS
Figures 1, 2
Figures 1, 2
Figures 1, 3
Figures 1, 3
Figures 1, 4
–50
vs Temperature
FB Pin Hysteresis vs Temperature
–25
V
CC
–25
= 48V
TEMPERATURE (°C)
0
TEMPERATURE (°C)
T
0
A
25
= 25°C, V
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
25
50
48V
24V
50
CC
75
1641-1 G02
= 24V
75
1641-1 G05
100
100
LT1641-1/LT1641-2
1.250
1.245
1.240
1.235
1.230
1.225
1.220
1.215
1.210
1.205
1.200
–10
–11
–12
–13
–5
–6
–7
–8
–9
–50
–50
FB Pin Low Voltage Threshold vs
Temperature
I
GATE
V
V
MIN
CC
CC
0.5
–25
–25
= 48V
Pull Up vs Temperature
= 48V
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
TYP
1.7
3.2
1.5
6
1
25
25
MAX
50
50
2
75
75
1641-1 G03
1641-1 G06
164112fc
UNITS
3
100
100
µs
µs
µs
µs
µs