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LTC4252-2CMS8 PDF预览

LTC4252-2CMS8

更新时间： 2024-11-08 22:51:47
品牌 Logo 应用领域
凌特 - Linear 光电二极管控制器
页数 文件大小 规格书
32页 328K
描述
Negative Voltage Hot Swap Controllers

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中文翻译

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LTC4252-2CMS8 技术参数

是否Rohs认证： 不符合生命周期：Transferred
零件包装代码：MSOP包装说明：TSSOP, TSSOP8,.19
针数：8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.09可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：S-PDSO-G8
JESD-609代码：e0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：8
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：TSSOP
封装等效代码：TSSOP8,.19封装形状：SQUARE
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：235
认证状态：Not Qualified座面最大高度：1.1 mm
子类别：Power Management Circuits最大供电电流 (Isup)：2 mA
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
技术：CMOS温度等级：COMMERCIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：20宽度：3 mm
Base Number Matches：1

LTC4252-2CMS8 数据手册

 浏览型号LTC4252-2CMS8的Datasheet PDF文件第2页浏览型号LTC4252-2CMS8的Datasheet PDF文件第3页浏览型号LTC4252-2CMS8的Datasheet PDF文件第4页浏览型号LTC4252-2CMS8的Datasheet PDF文件第5页浏览型号LTC4252-2CMS8的Datasheet PDF文件第6页浏览型号LTC4252-2CMS8的Datasheet PDF文件第7页 
LTC4252-1/LTC4252-2  
Negative Voltage  
Hot Swap Controllers  
U
FEATURES  
DESCRIPTIO  
■
Allows Safe Board Insertion and Removal from a  
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  
limiting and a fast feedforward path that limits peak  
current under worst-case catastrophic fault conditions.  
Live –48V Backplane  
■
Floating Topology Permits Very High Voltage  
Operation  
■
Programmable Analog Current Limit With Circuit  
Breaker Timer  
■
Fast Response Time Limits Peak Fault Current  
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.  
■
Programmable Soft-Start Current Limit  
■
Programmable Timer with Drain Voltage  
Accelerated Response  
■
Programmable Undervoltage/Overvoltage Protection  
■
LTC4252-1: Latch Off After Fault  
LTC4252-2: Automatic Retry After Fault  
■
U
APPLICATIO S  
■
Hot Board Insertion  
■
Electronic Circuit Breaker  
■
–48V Distributed Power Systems  
■
■
■
■
■
The LTC4252-1 latches off after a circuit breaker fault times  
out. The LTC4252-2 provides automatic retry after a fault.  
TheLTC4252isavailableineitheran8-pinor10-pinMSOP.  
Negative Power Supply Control  
Central Office Switching  
Programmable Current Limiting Circuit  
High Availability Servers  
Disk Arrays  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Hot Swap is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
–48V/2.5A Hot Swap Controller  
Start-Up Behavior  
GND  
R
IN  
+
3× 1.8k IN SERIES  
C
L
1/4W EACH  
100µF  
LOAD  
EN  
GATE  
5V/DIV  
C
IN  
1µF  
R3  
GND  
1
5.1k  
(SHORT PIN)  
V
R1  
402k  
1%  
IN  
LTC4252-1  
PWRGD  
V
SENSE  
2.5A/DIV  
OUT  
*
8
9
2
7
6
4
OV  
R
D
1M  
UV  
DRAIN  
GATE  
R2  
32.4k  
1%  
10  
3
Q1  
IRF530S  
TIMER  
SS  
V
OUT  
C
20V/DIV  
T
SENSE  
V
EE  
0.33µF  
R
10Ω  
R
S
0.02Ω  
C
5
C1  
10nF  
C
SS  
68nF  
C
18nF  
C
PWRGD  
10V/DIV  
4252-1/2 TA01  
–48V  
* M0C207  
1ms/DIV  
4252-1/2 TA01a  
425212f  
1
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中文翻译

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