參數(shù)資料
型號(hào)： LTC4252-2IMS8#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 電源管理
英文描述： Negative Voltage Hot Swap Controllers; Package: MSOP; No of Pins: 8; Temperature Range: -40°C to +85°C
中文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝： LEAD FREE, PLASTIC, MSOP-8
文件頁(yè)數(shù)： 1/36頁(yè)
文件大小： 336K
代理商： LTC4252-2IMS8#TRPBF
LTC4252-1/LTC4252-2
LTC4252A-1/LTC4252A-2
1
425212fc
TYPICAL APPLICATION
FEATURES
DESCRIPTION
Negative Voltage
Hot Swap Controllers
The LTC4252 negative voltage Hot SwapTM 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.
Adjustable undervoltage and overvoltage detectors dis-
connect 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). An adjustable soft-
start circuit controls MOSFET inrush current at start-up.
The LTC4252-1/LTC4252A-1 latch off after a circuit breaker
fault times out. The LTC4252-2 provides automatic retry
after a fault. The LTC4252A-1/LTC4252A-2 feature tight
±1% undervoltage/overvoltage threshold accuracy. The
LTC4252 is available in either an 8-pin or 10-pin MSOP.
–48V/2.5A Hot Swap Controller
Start-Up Behavior
APPLICATIONS
n Allows Safe Board Insertion and Removal from a
Live – 48V Backplane
n Floating Topology Permits Very High Voltage Operation
n Programmable Analog Current Limit With Circuit
Breaker Timer
n Fast Response Time Limits Peak Fault Current
n Programmable Soft-Start Current Limit
n Programmable Timer with Drain Voltage
Accelerated Response
n ±1% Undervoltage/Overvoltage Threshold Accuracy
(LTC4252A)
■
Adjustable Undervoltage/Overvoltage Protection
■
LTC4252-1/LTC4252A-1: Latch Off After Fault
■
LTC4252-2: Automatic Retry After Fault
■
Available in 8-Pin and 10-Pin MSOP Packages
n Hot Board Insertion
n Electronic Circuit Breaker
n – 48V Distributed Power Systems
n Negative Power Supply Control
n Central Office Switching
n High Availability Servers
n ATCA
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
425212 TA01
–48RTN
OV
UV
VEE
VIN
SENSE
SS
TIMER
GATE
PWRGD
DRAIN
LTC4252-1
R1
402k
1%
R2
32.4k
1%
CT
0.33μF
DIN
DDZ13B**
CSS
68nF
CC
18nF
–48V
RS
0.02Ω
Q1
IRF530S
VOUT
RC
10Ω
R3
5.1k
RIN
3
× 1.8k IN SERIES
1/4W EACH
C1
10nF
CIN
1μF
CL
100μF
–48RTN
(SHORT PIN)
+
RD 1M
LOAD
EN
*
* M0C207
**DIODES, INC
RECOMMENDED FOR HARSH ENVIRONMENTS
425212 TA01a
GATE
5V/DIV
SENSE
2.5A/DIV
PWRGD
10V/DIV
1ms/DIV
VOUT
20V/DIV
相關(guān)PDF資料
PDF描述
LTC4253ACGN-ADJ#PBF -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 20; Temperature Range: 0°C to +70°C
LTC4253ACGN-ADJ#TRPBF -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 20; Temperature Range: 0°C to +70°C
LTC4253ACUF-ADJ#PBF -48V Hot Swap Controller with Sequencer; Package: QFN; No of Pins: 20; Temperature Range: 0°C to +70°C
LTC4253ACUF-ADJ#TRPBF -48V Hot Swap Controller with Sequencer; Package: QFN; No of Pins: 20; Temperature Range: 0°C to +70°C
LTC4253AIGN-ADJ#PBF -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 20; Temperature Range: -40°C to +85°C
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC4252-2IMSPBF 制造商:Linear Technology 功能描述:Hot Swap Controller 1-Channel MSOP10
LTC4252-2IMSTR 制造商:LINER 制造商全稱:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers
LTC4252-2IMSTRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Negative Voltage Hot Swap Controllers
LTC4252A-1 制造商:LINER 制造商全稱:Linear Technology 功能描述:–48V Hot Swap Controllers
LTC4252A-1CMS 功能描述:IC CTRLR HOTSWAP NEG VOLT 10MSOP 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
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