LT4250H LINER [Linear Technology], LT4250H Datasheet - Page 3

• Manufacturer Part Number: LT4250H
• Description: Negative 48V Hot Swap Controller
• Manufacturer: LINER [Linear Technology]

Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
TYPICAL PERFOR A CE CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
V
I
V
V
I
V
I
AC
t
t
t
t
t
t
t
t
INOV
DRAIN
OH
PHLOV
PHLUV
PLHOV
PLHUV
PHLSENSE
PHLCB
PHLDL
PHLGH
OVHY
DL
GH
OL
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
0
0
Supply Current vs Supply Voltage
T
A
= 25 C
PARAMETER
OV Pin Hysteresis
OV Pin Input Current
DRAIN Low Threshold
GATE High Threshold
Drain Input Bias Current
PWRGD Output Low Voltage
PWRGD Output Low Voltage
(PWRGD – DRAIN)
Output Leakage
OV High to GATE Low
UV Low to GATE Low
OV Low to GATE High
UV High to GATE High
SENSE High to Gate Low
Current Limit to GATE Low
DRAIN Low to PWRGD Low
DRAIN Low to (PWRGD – DRAIN) High (LT4250H) Figures 1a, 5a
GATE High to PWRGD Low
GATE High to (PWRGD – DRAIN) High
20
SUPPLY VOLTAGE (V)
40
60
W
80
1640 G01
U
100
CONDITIONS
V
V
V
PWRGD (LT4250L), (V
I
I
PWRGD (LT4250H), V
I
PWRGD (LT4250L), V
PWRGD (LT4250H), V
Figures 1a, 2
Figures 1a, 3
Figures 1a, 2
Figures 1a, 3
Figures 1a, 4a
Figures 1b, 4b
(LT4250L) Figures 1a, 5a
(LT4250L) Figures 1a, 5b
(LT4250H) Figures 1a, 5b
OUT
OUT
OUT
OV
DRAIN
DRAIN
V
1.6
1.5
1.1
1.0
GATE
1.4
1.3
1.2
= V
= 1mA
= 5mA
= 1mA
– 50
A
Supply Current vs Temperature
– V
= 48V
EE
= 25 C. (Note 2), V
– V
V
DD
EE
– 25
GATE
= 48V
, DRAIN Decreasing
The
Decreasing
TEMPERATURE ( C)
0
denotes the specifications which apply over the full operating
DRAIN
DRAIN
DRAIN
DRAIN
25
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to V
specified.
= 48V, V
= 5V
= 0V, V
– V
DD
50
EE
= 48V, V
) < V
PWRGD
PWRGD
75
DL
1640 G02
EE
= 80V
100
= 80V
= 0V unless otherwise noted.
15
14
13
12
11
10
8
9
7
6
LT4250L/LT4250H
0
Gate Voltage vs Supply Voltage
MIN
T
1.1
10
A
= 25 C
20
SUPPLY VOLTAGE (V)
– 0 .03
0.48
0.75
0.05
0.05
TYP
500
1.6
1.3
1.2
1.7
1.5
5.5
6.5
1.5
1.5
20
80
1
1
1
EE
40
unless otherwise
MAX
– 0.5
500
2.3
0.8
3.0
1.0
60
10
10
3
80
1640 G03
UNITS
4250lhf
3
mV
100
A
V
V
A
V
V
V
A
A
s
s
s
s
s
s
s
s
s
s