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LTC4253BCGN#PBF

更新时间： 2024-11-28 19:41:23
品牌 Logo 应用领域
凌特 - Linear 光电二极管
页数 文件大小 规格书
32页 360K
描述
LTC4253B - -48V Hot Swap Controller with Sequencer; Package: SSOP; Pins: 16; Temperature Range: 0°C to 70°C

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中文翻译

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LTC4253BCGN#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SSOP包装说明：SSOP, SSOP16,.25
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.49模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
湿度敏感等级：1端子数量：16
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装等效代码：SSOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified子类别：Power Management Circuits
最大供电电流 (Isup)：2 mA表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

LTC4253BCGN#PBF 数据手册

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LTC4253B  
–48V Hot Swap Controller  
with Sequencer  
FeaTures  
DescripTion  
The LTC®4253B negative voltage Hot Swap™ controller  
allows a board to be safely inserted and removed from a  
livebackplane.Outputcurrentiscontrolledbythreestages  
of current-limiting: a timed circuit breaker, active current  
limiting and a fast feedforward path that limits peak cur-  
rent under worst-case catastrophic fault conditions. The  
LTC4253B latches off after a circuit fault.  
n
Allows Safe Board Insertion and Removal from a  
Live –48V Backplane  
n
Floating Topology Permits Very High Voltage  
Operation  
n
Adjustable Analog Current Limit with Breaker Timer  
Ideal for Two Battery Feeds  
n
Fast Response Time Limits Peak Fault Current  
n
Three Sequenced Power Good Outputs  
Adjustable undervoltage and overvoltage detectors dis-  
connect the load whenever the input supply exceeds the  
desired operating range. The LTC4253B’s supply input is  
shunt-regulated, allowing safe operation with very high  
supplyvoltages.Amultifunctiontimerdelaysinitialstart-up  
andcontrolsthecircuitbreaker’sresponsetime.Thecircuit  
breaker’s response time can be 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.  
n
Improved Ruggedness Shunt Regulator  
n
Adjustable Soft-Start Current Limit  
n
Adjustable Timer with Drain Voltage Accelerated  
Response  
Latchoff After Fault  
Available in a 16-Pin SSOP Package  
n
n
applicaTions  
n
–48V Distributed Power Systems  
n
Negative Power Supply Control  
Threepowergoodoutputsaresequencedbyanadjustable  
timer and two ENABLE inputs to enable external power  
modules at start-up or disable them if the circuit breaker  
trips. The LTC4253B improves the ruggedness of the  
LTC4253 shunt regulator.  
n
Central Office Switching  
n
High Availability Servers  
n
Disk Arrays  
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.  
Typical applicaTion  
–48V/2.5A Hot Swap Controller  
–48V RTN  
Start-Up Behavior  
2.5k  
15k(1/4W)/6  
+
V
1µF  
IN  
LOAD1  
100µF  
5.6k  
–48V RTN  
LOAD2  
EN  
5.6k  
5.6k  
GATE  
10V  
402k  
1%  
EN3  
EN2  
LTC4253B  
RESET  
V
10nF  
LOAD3  
EN  
IN  
EN  
††  
D
IN  
DDZ13B*  
SS  
1V  
†
†
†
UV  
PWRGD1  
PWRGD2  
PWRGD3  
4253b TA01  
SENSE  
50mV  
OV  
SS  
32.4k  
1%  
68nF  
DRAIN  
0.1µF  
SQTIMER  
1M  
*DIODES, INC.  
IRF530S  
V
GATE  
OUT  
†
B3100*  
B3100*  
MOC207  
0.33µF  
50V  
–48V A  
–48V B  
††  
TIMER  
V
SENSE  
RECOMMENDED FOR HARSH ENVIRONMENTS.  
10Ω  
EE  
4253b TA01b  
1ms/DIV  
0.02Ω  
18nF  
4253bf  
1
1234567...32

中文翻译

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LTC4253BCGN#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC4253BCGN#TRPBF Linear

完全替代

 LTC4253B - -48V Hot Swap Controller with Sequencer; Package: SSOP; Pins: 16; Temperature R

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