LT4254
2
4254fb
Supply Voltage (V
CC
) .................................. 0.3 to 44V
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) ....................... 100礎(chǔ)
Operating Temperature
LT4254C................................................. 0癈 to 70癈
LT4254I ............................................. 40癈 to 85癈
Storage Temperature Range ................ 65癈 to 150癈
Lead Temperature (Soldering, 10 sec)................. 300癈
ABSOLUTE   AXI  U   RATI  GS
W
W
U
PACKAGE/ORDER I  FOR  ATIO
U
W
(Note 1)
ELECTRICAL CHARACTERISTICS  The ?/SPAN> denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25?/SPAN>C. V
CC
= 24V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
Operating Voltage
?/DIV>
10.8
36
V
I
CC
Operating Current
1.9
3
mA
UVLH
Undervoltage Threshold
V
CC
Low-to-High Transition
?/DIV>
3.96
4
4.04
V
V
UVHYS
Hysteresis
0.25
0.4
0.55
V
I
INUV
UV Input Current
UV = 4.5V
0.1
1
礎(chǔ)
UV = 0V
1.5
3
礎(chǔ)
V
OVHL
Overvoltage Threshold
V
CC
Low-to-High Transition
?/DIV>
3.96
4
4.04
V
V
OVHYS
Hysteresis
0.25
0.4
0.55
V
I
INOV
OV Input Current
0V d OV < 6.5V
0.1
1
礎(chǔ)
V
OPEN
Open-Circuit Voltage Threshold (V
CC
V
SENSE
)
?/DIV>
2
3.5
5
mV
V
OLOPEN
OPEN Output Low Voltage
I
O
= 2mA
0.20
0.5
V
I
O
= 5mA
0.75
1.3
V
I
INOPEN
Leakage Current
V
OPEN
= 5V
0.1
1
礎(chǔ)
V
SENSETRIP
SENSE Pin Trip Voltage (V
CC
V
SENSE
)
FB = 0V
?/DIV>
5.5
12
25
mV
FB e 2V
?/DIV>
40
50
60
mV
I
INSNS
SENSE Pin Input Current
40
70
礎(chǔ)
I
PU
GATE Pull-Up Current
Charge Pump On, V
GATE
= 7V
?/DIV>
15
35
63
礎(chǔ)
I
PD
GATE Pull-Down Current
Any Fault, V
GATE
= 3V
40
60
80
mA
V
GATE
External N-Channel Gate Drive (Note 2)
V
GATE
V
CC
, 12V d V
CC
d 20V
?/DIV>
4.5
8.8
12.5
V
20V d V
CC
d 36V
?/DIV>
10
11
12.5
V
V
FB
FB Voltage Threshold
FB High-to-Low Transition
?/DIV>
3.96
4
4.04
V
FB Low-to-High Transition
?/DIV>
4.20
4.45
4.65
V
V
FBHYS
FB Hysteresis Voltage
0.3
0.45
0.60
V
V
OLPGD
PWRGD Output Low Voltage
I
O
= 1.6mA
0.25
0.4
V
I
O
= 5mA
0.63
1.0
V
ORDER PART NUMBER
GN PART MARKING
4254
4254I
LT4254CGN
LT4254IGN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Note: NC = No Connect
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
GN PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
UV
OV
NC
OPEN
PWRGD
NC
RETRY
GND
V
CC
SENSE
NC
GATE
NC
NC
FB
TIMER
T
JMAX
= 125癈, ?/DIV>
JA
= 130癈/W
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
LT4254CGN#PBF |
功能描述:IC CTRLR HOTSWAP POSVOLT 16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
LT4254CGN#TR |
功能描述:IC CTLR HOTSWAP POS 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
LT4254CGN#TRPBF |
功能描述:IC CTRLR HOTSWAP POSVOLT 16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
LT4254IGN |
功能描述:IC CTLR HOTSWAP POS 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
LT4254IGN#PBF |
功能描述:IC CTLR HOTSWAP POS 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠(yuǎn)程電力系統(tǒng),AdvancedTCA ? 系統(tǒng),高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP,10-MSOP(0.118",3.00mm 寬) 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |