LT4256-3CGN Linear Technology, LT4256-3CGN Datasheet - Page 3

• Manufacturer Part Number: LT4256-3CGN
• Description: IC CTRLR HOTSWP HV DETECT 16SSOP
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LT4256-3CGN

• 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: 16-SSOP (0.150", 3.90mm Width)
• Family Name: LT4256-3
• Package Type: SSOP N
• Operating Supply Voltage (min): 10.8V
• Operating Supply Voltage (max): 80V
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Product Depth (mm): 3.99mm
• Product Height (mm): 1.5mm
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

temperature range, otherwise specifications are at T
SYMBOL
V
V
V
I
I
I
I
V
D
V
I
t
t
t
t
t
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Specifications are at T
ELECTRICAL CHARACTERISTICS
PWRGD
INFB
TIMERPU
TIMERPD
INRTR
PHLUV
PLHUV
PHLFB
PLHFB
PHLSENSE
TYPICAL PERFOR A CE CHARACTERISTICS
FB
FBHYS
OLPGD
THTIMER
RETRYTH
TIMER
58
53
48
20
15
10
–50
SENSE Regulation Voltage
vs Temperature
–25
PARAMETER
FB Voltage Threshold
FB Hysteresis Voltage
PWRGD Output Low Voltage
PWRGD Pin Leakage Current
FB Input Current
TIMER Pull-Up Current
TIMER Pull-Down Current
TIMER Shutdown Threshold
Duty Cycle (RETRY Mode)
RETRY Threshold
RETRY Input Current
UV Low to GATE Low
UV High to GATE High
FB Low to PWRGD Low
FB High to PWRGD High
(V
CC
TEMPERATURE (°C)
– V
0
SENSE
FB = 0V
FB > 2V
25
A
= 25°C unless otherwise noted.
) High to GATE Low
50
W
75
42563 G01
U
100
3.5
3.0
2.0
1.5
1.0
2.5
0.5
0
10
A
I
= 25°C. V
CC
CONDITIONS
FB High-to-Low Transition
FB Low-to-High Transition
I
I
V
FB = 4.5V
TIMER = 3V, During Fault
TIMER = 3V
C
RETRY = GND
C
C
V
O
O
PWRGD
TIMER
GATE
GATE
CC
vs V
20
= 1.6mA
= 5mA
The
– V
CC
= 100pF
= 100pF
30
= 10nF
SENSE
●
= 80V
CC
denotes the specifications which apply over the full operating
= 48V unless otherwise noted.
40
= 275mV
V
CC
Note 2: An internal clamp limits the GATE pin to a minimum of 10V above
V
the part.
CC
(V)
50
. Driving this pin to a voltage beyond the clamp voltage may damage
60
70
42563 G02
80
●
●
●
●
●
●
●
2.5
2.0
1.5
1.0
0.5
0
–50
I
CC
V
3.95
4.20
MIN
– 63
0.3
1.5
4.3
1.5
0.4
CC
vs Temperature
= 48V
–25
TEMPERATURE (°C)
– 105
3.99
4.45
0.45
0.25
0.60
–0.1
4.65
0.85
TYP
–87
0
0.1
1.7
0.8
3.2
3
3
6
1
LT4256-3
25
–147
MAX
–130
4.03
4.65
0.60
0.4
1.0
4.5
1.2
–1
1
5
5
3
9
2
5
3
50
75
UNITS
42563fa
42563 G03
3
µA
µA
µA
µA
µA
µs
µs
µs
µs
µs
%
100
V
V
V
V
V
V
V