參數(shù)資料
型號(hào)： LTC4252-2CMS8
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 電源管理
英文描述： Negative Voltage Hot Swap Controllers
中文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： PLASTIC, MSOP-8
文件頁(yè)數(shù)： 1/32頁(yè)
文件大?。?/td> 327K
代理商： LTC4252-2CMS8
LTC4252-1/LTC4252-2
Negative Voltage
Hot Swap Controllers
1
425212f
The LTC
4252 negative voltage Hot Swap
TM
controller
allows a board to be safely inserted and removed from a
live backplane. Output current is controlled by three stages
of current limiting: a timed circuit breaker, active current
limiting and a fast feedforward path that limits peak
current under worst-case catastrophic fault conditions.
Programmable undervoltage and overvoltage detectors
disconnect the load whenever the input supply exceeds
the desired operating range. The LTC4252’s supply input
is shunt regulated, allowing safe operation with very high
supply voltages. A multifunction timer delays initial start-
up and controls the circuit breaker’s response time. The
circuit breaker’s response time is accelerated by sensing
excessive MOSFET drain voltage, keeping the MOSFET
within its safe operating area (SOA). A programmable
soft-start circuit controls MOSFET inrush current at start-
up. A power good status output can enable a power
module at start-up or disable it if the circuit breaker trips.
The LTC4252-1 latches off after a circuit breaker fault times
out. The LTC4252-2 provides automatic retry after a fault.
The LTC4252 is available in either an 8-pin or 10-pin MSOP.
I
Hot Board Insertion
I
Electronic Circuit Breaker
I
–48V Distributed Power Systems
I
Negative Power Supply Control
I
Central Office Switching
I
Programmable Current Limiting Circuit
I
High Availability Servers
I
Disk Arrays
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
I
Allows Safe Board Insertion and Removal from a
Live –48V Backplane
I
Floating Topology Permits Very High Voltage
Operation
I
Programmable Analog Current Limit With Circuit
Breaker Timer
I
Fast Response Time Limits Peak Fault Current
I
Programmable Soft-Start Current Limit
I
Programmable Timer with Drain Voltage
Accelerated Response
I
Programmable Undervoltage/Overvoltage Protection
I
LTC4252-1: Latch Off After Fault
I
LTC4252-2: Automatic Retry After Fault
–48V/2.5A Hot Swap Controller
4252-1/2 TA01
GND
OV
UV
V
EE
V
IN
SENSE
SS
TIMER
GATE
PWRGD
DRAIN
LTC4252-1
R1
402k
1%
R2
32.4k
1%
C
T
0.33
μ
F
C
68nF
C
18nF
–48V
R
S
0.02
Q1
IRF530S
V
OUT
R
C
10
R3
5.1k
R
IN
3
×
1.8k IN SERIES
1/4W EACH
1
8
9
10
3
2
7
6
4
5
C1
10nF
C
IN
1
μ
F
C
L
100
μ
F
GND
(SHORT PIN)
+
R
D
1M
LOAD
EN
*
* M0C207
4252-1/2 TA01a
GATE
5V/DIV
SENSE
2.5A/DIV
PWRGD
10V/DIV
1ms/DIV
V
20V/DIV
Start-Up Behavior
FEATURES
DESCRIPTIOU
APPLICATIU
TYPICAL APPLICATIO
U
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4252-2CMS8#PBF 功能描述:IC CNTRLR HOTSWAP NEGVOLT 8-MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類(lèi)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(kāi)關(guān):無(wú) 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(lèi)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
LTC4252-2CMS8#TR 功能描述:IC CNTRLR HOTSWAP NEGVOLT 8-MSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類(lèi)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(kāi)關(guān):無(wú) 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(lèi)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
LTC4252-2CMS8#TRPBF 功能描述:IC CNTRLR HOTSWAP NEGVOLT 8-MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類(lèi)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(kāi)關(guān):無(wú) 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(lèi)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
LTC4252-2CMS8PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers
LTC4252-2CMS8TR 制造商:LINER 制造商全稱:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers
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