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參數(shù)資料
| 型號： | LTC4251CS6 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | 1 MM HEIGHT, PLASTIC, MO-193, TSOT-23, 6 PIN |
| 文件頁數(shù)： | 19/20頁 |
| 文件大小： | 235K |
| 代理商： | LTC4251CS6 |
LTC4251/LTC4251-1/
LTC4251-2
8
425112fa
Hot Circuit Insertion
When circuit boards are inserted into a live backplane, the
supply bypass capacitors can draw huge transient currents
from the power bus as they charge. The flow of current
damages the connector pins and glitches the power bus,
causing other boards in the system to reset. The LTC4251/
LTC4251-1/LTC4251-2 are designed to turn on a circuit
board supply in a controlled manner, allowing insertion or
removal without glitches or connector damage.
Initial Start-Up
The LTC4251/LTC4251-1/LTC4251-2 reside on a remov-
able circuit board and control the path between the con-
nector and load or power conversion circuitry with an
–
+
425112 BD
–
+
–
+
–
+
–
+
–
+
–
+
VIN
VEE
5.8
A
5.8
A
22
A
VIN
58
A
230
A
TIMER
VOVHI
VUVLO
4V
1V
LOGIC
+
–
+
–
VEE
VOS = 10mV
200mV
–
+
0.5V
UV/OV*
OV**
UV
GATE
SENSE
6
1
2
3
5
4
5k
CB
FCL
50mV
+
–
ACL
*UV FOR THE LTC4251-2
** THE OV COMPARATOR IS DISABLED FOR LTC4251-2
BLOCK DIAGRA
W
OPERATIO
U
Note that for simplicity, the following assumptions are made in the text. Firstly, UV/OV also means the UV
pin of the LTC4251-2. Secondly, all overvoltage conditions and references to OV, VOVHI and VOVLO do not apply to the LTC4251-2 as
the OV comparator in this part is disabled.
external MOSFET switch (see Figure 1). Both inrush con-
trol and short-circuit protection are provided by the
MOSFET.
A detailed schematic is shown in Figure 2. –48V and
–48RTN receive power through the longest connector
pins, and are the first to connect when the board is
inserted. The GATE pin holds the MOSFET off during this
time. UV/OV determines whether or not the MOSFET
should be turned on based upon internal, high-accuracy
thresholds and an external divider. UV/OV does double
duty by also monitoring whether or not the connector is
seated. The top of the divider detects –48RTN by way of a
short connector pin that is the last to mate during the
insertion sequence.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4251CS6#PBF | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 6-Pin TSOT-23 |
| LTC4251CS6#TR | 功能描述:IC CTRLR HOTSWAP NEGVOLT SOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標準包裝:50 系列:- 類型:熱交換控制器 應用:-48V 遠程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關: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） 供應商設備封裝:10-MSOP 包裝:管件 |
| LTC4251CS6#TRM | 功能描述:IC CTRLR HOTSWAP NEGVOLT SOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關 應用:通用 內(nèi)部開關:是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC4251CS6#TRMPBF | 功能描述:IC CTRLR HOTSWAP NEGVOLT SOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標準包裝:50 系列:- 類型:熱交換控制器 應用:-48V 遠程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關: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） 供應商設備封裝:10-MSOP 包裝:管件 |
| LTC4251CS6#TRPBF | 功能描述:IC CTRLR HOTSWAP NEGVOLT SOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標準包裝:50 系列:- 類型:熱交換控制器 應用:-48V 遠程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關: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） 供應商設備封裝:10-MSOP 包裝:管件 |
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