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LT4250LIN8 PDF预览

LT4250LIN8

更新时间: 2024-11-10 22:30:59
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
12页 231K
描述
Negative 48V Hot Swap Controller

LT4250LIN8 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:DIP包装说明:DIP, DIP8,.3
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.12可调阈值:YES
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDIP-T8
JESD-609代码:e0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:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP8,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):NOT SPECIFIED电源:48 V
认证状态:Not Qualified座面最大高度:3.937 mm
子类别:Power Management Circuits最大供电电流 (Isup):5 mA
最大供电电压 (Vsup):80 V最小供电电压 (Vsup):20 V
标称供电电压 (Vsup):48 V表面贴装:NO
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

LT4250LIN8 数据手册

 浏览型号LT4250LIN8的Datasheet PDF文件第2页浏览型号LT4250LIN8的Datasheet PDF文件第3页浏览型号LT4250LIN8的Datasheet PDF文件第4页浏览型号LT4250LIN8的Datasheet PDF文件第5页浏览型号LT4250LIN8的Datasheet PDF文件第6页浏览型号LT4250LIN8的Datasheet PDF文件第7页 
LT4250L/LT4250H  
Negative 48V  
Hot Swap Controller  
U
FEATURES  
DESCRIPTIO  
TheLT®4250L/LT4250Hare8-pin,negative48VHotSwapTM  
controllers that allow a board to be safely inserted and  
removedfromalivebackplane. Inrushcurrentislimitedto  
aprogrammablevaluebycontrollingthegatevoltageofan  
external N-channel pass transistor. The pass transistor is  
turned off if the input voltage is less than the program-  
mable undervoltage threshold or greater than the over-  
voltage threshold. A programmable current limit protects  
the system against shorts. After a 500µs timeout the  
current limit activates the electronic circuit breaker. The  
PWRGD (LT4250L) or PWRGD (LT4250H) signal can be  
used to directly enable a power module. The LT4250L is  
designed for modules with a low enable input and the  
LT4250H for modules with a high enable input.  
Allows Safe Board Insertion and Removal  
from a Live 48V Backplane  
Circuit Breaker Immunity to Voltage Steps and  
Current Spikes  
Programmable Inrush and  
Short-Circuit Current Limits  
Pin Compatible with LT1640L/LT1640H  
Operates from –20V to 80V  
Programmable Overvoltage Protection  
Programmable Undervoltage Lockout  
Power Good Control Output  
Bell-Core CompaUtible ON/OFF Threshold  
APPLICATIO S  
The LT4250L/LT4250H are available in 8-pin PDIP and SO  
packages.  
Central Office Switching  
48V Distributed Power Systems  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Negative Power Supply Control  
Hot Swap is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
–48V RTN  
(SHORT PIN)  
–48V RTN  
R4†  
Voltage Step On Input Supply  
8
549k  
1%  
V
DD  
3
2
UV =  
UV  
OV  
R5†  
6.49k  
1%  
38.5V  
1
LT4250L  
PWRGD  
UV  
RELEASE  
AT 43V  
R6†  
10k  
1%  
OV =  
71V  
V
SENSE  
5
GATE  
6
DRAIN  
7
EE  
V
AND  
EE  
DRAIN  
20V/DIV  
4
R3†  
1k, 5%  
*
0.1µF  
10V  
C1†  
470nF  
25V  
R2  
10Ω  
5%  
C2†  
15nF  
100V  
–48V  
INPUT 1  
R1†  
0.02Ω  
5%  
I
(Q1)  
D
5A/DIV  
2
Q1  
IRF530  
ON/OFF  
1
9
8
+
+
+
–48V  
5V  
V
V
V
500µs/DIV  
IN  
OUT  
SENSE  
INPUT 2  
C3  
0.1µF  
100V  
C4  
+
C5  
+
7
6
5
* DIODES INC. SMAT70A  
100µF  
TRIM  
100µF  
16V  
THESE COMPONENTS ARE APPLICATION  
SPECIFIC AND MUST BE SELECTED BASED  
UPON OPERATING CONDITIONS AND DESIRED  
PERFORMANCE. SEE APPLICATIONS  
INFORMATION.  
100V  
SENSE  
4
V
IN  
OUT  
4250 TA01  
LUCENT  
JW050A1-E  
4250lhf  
1

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