LT4256-2CS8 Linear Technology, LT4256-2CS8 Datasheet - Page 3

• Manufacturer Part Number: LT4256-2CS8
• Description: IC CTRLR HOTSWAP HV AUTO 8SOIC
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LT4256-2CS8

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: 10.8 V ~ 80 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

temperature range, otherwise specifications are at T
SYMBOL
t
t
t
t
t
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
otherwise noted.
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
PHLUV
PLHUV
PHLFB
PLHFB
PHLSENSE
4.1
4.0
3.6
3.5
2.5
2.0
3.9
3.8
3.7
1.5
1.0
0.5
0
–50
–50
UV Thresholds vs Temperature
I
CC
V
CC
vs Temperature
= 48V
–25
–25
PARAMETER
UV Low to GATE Low
UV High to GATE High
FB Low to PWRGD Low
FB High to PWRGD High
(V
CC
TEMPERATURE (°C)
TEMPERATURE (°C)
– V
L-H THRESHOLD
0
0
SENSE
H-L THRESHOLD
25
25
) High to GATE Low
50
50
W
75
75
4256 G01
4256 G04
U
100
100
4.5
4.4
4.3
4.2
4.1
4.0
3.9
58
53
48
20
15
10
–50
–50
A
SENSE Pin Regulation Voltage
vs Temperature
PWRGD Thresholds
vs Temperature
= 25°C. V
CONDITIONS
C
V
GATE
CC
–25
–25
The
– V
= 0
SENSE
TEMPERATURE (°C)
TEMPERATURE (°C)
●
CC
0
0
denotes the specifications which apply over the full operating
H-L THRESHOLD
= 48V unless otherwise noted.
FB > 2V
FB = 0V
= 275mV
25
25
Note 2: An internal clamp limits the GATE pin to a minimum of 10V above
V
the part.
CC
L-H THRESHOLD
. Driving this pin to a voltage beyond the clamp voltage may damage
50
50
75
75
Specifications are at T
4256 G02
4256 G05
100
100
LT4256-1/LT4256-2
3.5
3.0
2.0
1.5
1.0
2.5
0.5
0
6
5
1
0
4
3
2
10
0
I
PWRGD Output Voltage
vs I
CC
MIN
vs V
PWRGD
20
2
A
= 25°C unless
CC
30
4
TYP
I
1.7
0.8
3.2
PWRGD
6
1
40
V
CC
6
(V)
50
(mA)
MAX
8
3
9
2
5
3
60
10
70
425612fa
UNITS
4256 G03
4256 G06
3
80
12
µs
µs
µs
µs
µs