LT4254IGN Linear Technology, LT4254IGN Datasheet - Page 2

• Manufacturer Part Number: LT4254IGN
• Description: IC CTLR HOTSWAP POS 16-SSOP
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LT4254IGN

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: 10.8 V ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP (0.150", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE AXI U RATI GS
LT4254
(Note 1)
Supply Voltage (V
SENSE, PWRGD ......................................... – 0.3 to 44V
GATE .......................................................... – 0.3 to 50V
FB, UV, OPEN ............................................. – 0.3 to 44V
OV .............................................................. – 0.3 to 18V
RETRY ........................................................ – 0.3 to 15V
TIMER ..................................................... – 0.3V to 4.3V
Maximum Input Current (TIMER) ....................... 100µA
Operating Temperature
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
temperature range, otherwise specifications are at T
SYMBOL
V
I
UVLH
V
I
V
V
I
V
V
I
V
I
I
I
∆V
V
V
V
2
ELECTRICAL CHARACTERISTICS
CC
INUV
INOV
INOPEN
INSNS
PU
PD
CC
UVHYS
OVHL
OVHYS
OPEN
OLOPEN
SENSETRIP
FB
FBHYS
OLPGD
GATE
LT4254C ................................................. 0°C to 70°C
LT4254I ............................................. – 40°C to 85°C
PARAMETER
Operating Voltage
Operating Current
Undervoltage Threshold
Hysteresis
UV Input Current
Overvoltage Threshold
Hysteresis
OV Input Current
Open-Circuit Voltage Threshold (V
OPEN Output Low Voltage
Leakage Current
SENSE Pin Trip Voltage (V
SENSE Pin Input Current
GATE Pull-Up Current
GATE Pull-Down Current
External N-Channel Gate Drive (Note 2)
FB Voltage Threshold
FB Hysteresis Voltage
PWRGD Output Low Voltage
CC
W
) .................................. – 0.3 to 44V
W W
CC
– V
SENSE
CC
– V
)
SENSE
U
)
A
= 25°C. V
CONDITIONS
V
UV = 4.5V
UV = 0V
V
0V ≤ OV < 6.5V
I
I
V
FB = 0V
FB ≥ 2V
Charge Pump On, ∆V
Any Fault, V
V
20V ≤ V
FB High-to-Low Transition
FB Low-to-High Transition
I
I
O
O
O
O
CC
CC
OPEN
GATE
= 2mA
= 5mA
= 1.6mA
= 5mA
The
Low-to-High Transition
Low-to-High Transition
– V
= 5V
CC
●
CC
CC
denotes the specifications which apply over the full operating
≤ 36V
GATE
, 12V ≤ V
= 24V unless otherwise noted.
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Note: NC = No Connect
= 3V
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
PWRGD
RETRY
GATE
CC
OPEN
GND
UV
OV
NC
NC
T
≤ 20V
JMAX
= 7V
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
= 125°C, θ
GN PACKAGE
TOP VIEW
JA
= 130°C/W
http://www.linear.com/leadfree/
16
15
14
13
12
11
10
9
V
SENSE
NC
GATE
NC
NC
FB
TIMER
●
●
●
●
●
●
●
●
●
●
●
CC
10.8
3.96
0.25
3.96
0.25
3.96
4.20
MIN
–15
5.5
4.5
0.3
40
40
10
2
ORDER PART NUMBER
U
GN PART MARKING
–0.1
–1.5
0.20
0.75
4.45
0.45
0.25
0.63
TYP
– 35
1.9
0.4
0.4
0.1
3.5
0.1
8.8
12
50
40
60
11
4
4
4
LT4254CGN
LT4254IGN
4254
4254I
W
MAX
4.04
0.55
4.04
0.55
12.5
12.5
4.04
4.65
0.60
– 63
0.5
1.3
0.4
1.0
–1
–3
36
25
60
70
80
3
1
5
1
UNITS
4254fb
U
mA
mV
mV
mV
mA
µA
µA
µA
µA
µA
µA
V
V
V
V
V
V
V
V
V
V
V
V
V
V