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参数资料
| 型号： | LTC4253AIGN#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 16; Temperature Range: -40°C to +85°C |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封装： | 0.150 INCH, LEAD FREE, PLASTIC, SSOP-16 |
| 文件页数： | 4/34页 |
| 文件大小： | 369K |
| 代理商： | LTC4253AIGN#PBF |
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LTC4253/LTC4253A
12
425353afd
operaTion
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 LTC4253/LTC4253A 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 LTC4253/LTC4253A reside on a removable circuit
boardandcontrolthepathbetweentheconnectorandload
or power conversion circuitry with an external MOSFET
switch(seeFigure1).Bothinrushcontrolandshort-circuit
protection are provided by the MOSFET.
A detailed schematic is shown in Figure 2. –48V and
–48RTNreceivepowerthroughthelongestconnectorpins
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
monitoringwhetherornottheconnectorisseated.Thetop
of the divider detects –48RTN by way of a short connector
pin that is the last to mate during the insertion sequence.
Figure 2. –48V/2.5A Application with a Wider Operating Range
Figure 1. Basic LTC4253/LTC4253A Hot Swap Topology
LTC4253
LTC4253A
–48RTN
4253 F01
PLUG-IN BOARD
–48V
BACKPLANE
+
CLOAD
ISOLATED
DC/DC
CONVERTER
MODULE
LOW
VOLTAGE
CIRCUITRY
+
–
+
–
R5
5.6k
R4
5.6k
R6
5.6k
PWRGD1
VIN
VEE
LTC4253
POWER
MODULE 1
PWRGD2
PWRGD3
EN3
EN2
UV
OV
RESET
DRAIN
SS
GATE
SQTIMER
SENSE
TIMER
EN
POWER
MODULE 2
EN
POWER
MODULE 3
EN
RIN
2.5k
15k(1/4W)/6
PUSH
RESET
EN3
4253 F02
EN2
RC
10
RD 1M
RS
0.02
Q1
IRF530S
VIN
CC
18nF
CT
0.33F
C1
10nF
–48RTN
(LONG PIN)
–48RTN
(SHORT PIN)
–48V
(LONG PIN)
CSQ
0.1F
CSS 68nF
R7
POWER
MODULE 1
OUTPUT
POWER
MODULE 2
OUTPUT
VIN
R8
+
CL
100F
CIN
1F
DIN
DDZ13B*
R1
38.3k
1%
R3
432k
1%
R9
47k
R2
4.75k
1%
*DIODES, INC.
MOC207
RECOMMENDED FOR HARSH ENVIRONMENTS.
VIN
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4253AIGN#TRPBF | -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 16; Temperature Range: -40°C to +85°C |
| LTC4253CGN#PBF | -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 16; Temperature Range: 0°C to +70°C |
| LTC4253CGN#TRPBF | -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 16; Temperature Range: 0°C to +70°C |
| LTC4253IGN#PBF | -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 16; Temperature Range: -40°C to +85°C |
| LTC4253IGN#TRPBF | -48V Hot Swap Controller with Sequencer; Package: SSOP; No of Pins: 16; Temperature Range: -40°C to +85°C |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4253BCGN#PBF | 功能描述:IC HOT SWAP CONTROLLER 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4253BCGN#PBF | 制造商:Linear Technology 功能描述:HOT SWAP CONTROLLER -48V SSOP-16 |
| LTC4253BCGN#TRPBF | 功能描述:IC HOT SWAP CONTROLLER 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:100 系列:- 类型:热插拔开关 应用:通用 内部开关:是 电流限制:可调 电源电压:9 V ~ 13.2 V 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:管件 |
| LTC4253BIGN#PBF | 功能描述:IC HOT SWAP CONTROLLER 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 标准包装:50 系列:- 类型:热交换控制器 应用:-48V 远程电力系统，AdvancedTCA ? 系统，高可用性 内部开关:无 电流限制:可调 电源电压:11.5 V ~ 14.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LTC4253BIGN#PBF | 制造商:Linear Technology 功能描述:HOT SWAP CONTROLLER -48V SSOP-16 |
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