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LTC4252A-1IMS#TRPBF

更新时间： 2024-11-07 21:04:35
品牌 Logo 应用领域
凌特 - Linear 光电二极管
页数 文件大小 规格书
36页 390K
描述
LTC4252/LTC4252A - Negative Voltage Hot Swap Controllers; Package: MSOP; Pins: 10; Temperature Range: -40°C to 85°C

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中文翻译

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LTC4252A-1IMS#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：MSOP包装说明：TSSOP,
针数：10Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.11可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：S-PDSO-G10
JESD-609代码：e3长度：3 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：10
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装形状：SQUARE封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.1 mm最大供电电压 (Vsup)：14.5 V
最小供电电压 (Vsup)：11.5 V标称供电电压 (Vsup)：13 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3 mm
Base Number Matches：1

LTC4252A-1IMS#TRPBF 数据手册

 浏览型号LTC4252A-1IMS#TRPBF的Datasheet PDF文件第2页浏览型号LTC4252A-1IMS#TRPBF的Datasheet PDF文件第3页浏览型号LTC4252A-1IMS#TRPBF的Datasheet PDF文件第4页浏览型号LTC4252A-1IMS#TRPBF的Datasheet PDF文件第5页浏览型号LTC4252A-1IMS#TRPBF的Datasheet PDF文件第6页浏览型号LTC4252A-1IMS#TRPBF的Datasheet PDF文件第7页 
LTC4252-1/LTC4252-2  
LTC4252A-1/LTC4252A-2  
Negative Voltage  
Hot Swap Controllers  
FeaTures  
DescripTion  
The LTC®4252 negative voltage Hot SwapTM controller  
allows a board to be safely inserted and removed from a  
livebackplane.Outputcurrentiscontrolledbythreestages  
of current limiting: a timed circuit breaker, active current  
limitingandafastfeedforwardpaththatlimitspeakcurrent  
under worst-case catastrophic fault conditions.  
n
Allows Safe Board Insertion and Removal from a  
Live –48V Backplane  
n
Floating Topology Permits Very High Voltage Operation  
n
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  
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.  
Accelerated Response  
n
±±1 Undervoltage/Overvoltage Threshold Accuracy  
(LTC4252A)  
■
Adjustable Undervoltage/Overvoltage Protection  
■
LTC4252-1/LTC4252A-1: Latch Off After Fault  
■
LTC4252-2/LTC4252A-2: Automatic Retry After Fault  
■
Available in 8-Pin and 10-Pin MSOP Packages  
applicaTions  
n
Hot Board Insertion  
TheLTC4252-1/LTC4252A-1latchoffafteracircuitbreaker  
fault times out. The LTC4252-2/LTC4252A-2 provide au-  
tomatic retry after a fault. The LTC4252A-1/LTC4252A-2  
feature tight 1ꢀ undervoltage/overvoltage threshold  
accuracy. The LTC4252 is available in either an 8-pin  
or 10-pin MSOP, while the LTC4252A is available in the  
10-pin MSOP.  
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.  
Typical applicaTion  
Start-Up Behavior  
–48V/2.5A Hot Swap Controller  
–48RTN  
R
+
IN  
C
L
3× 1.8k IN SERIES  
1/4W EACH  
100µF  
LOAD  
EN  
GATE  
5V/DIV  
†
C
R3  
1µF 5.1k  
IN  
D
IN  
–48RTN  
(SHORT PIN)  
**  
DDZ13B  
V
R1  
IN  
LTC4252-1  
PWRGD  
SENSE  
2.5A/DIV  
402k  
1%  
V
OUT  
*
OV  
R
1M  
D
UV  
DRAIN  
GATE  
R2  
32.4k  
1%  
Q1  
IRF530S  
TIMER  
SS  
V
OUT  
20V/DIV  
C
T
0.33µF  
SENSE  
V
EE  
R
10Ω  
R
C
S
C1  
10nF  
C
0.02Ω  
SS  
68nF  
C
18nF  
C
PWRGD  
10V/DIV  
425212 TA01  
–48V  
†
* M0C207  
**DIODES, INC  
RECOMMENDED FOR HARSH ENVIRONMENTS  
1ms/DIV  
425212 TA01a  
425212fe  
1
For more information www.linear.com/LTC4252-1  
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