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LT4250HCS8#TRPBF PDF预览

LT4250HCS8#TRPBF

更新时间: 2024-11-11 19:17:35
品牌 Logo 应用领域
凌特 - Linear 光电二极管
页数 文件大小 规格书
14页 235K
描述
LT4250 - Negative 48V Hot Swap Controller; Package: SO; Pins: 8; Temperature Range: 0°C to 70°C

LT4250HCS8#TRPBF 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:SOIC包装说明:SOP, SOP8,.25
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.08可调阈值:YES
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-G8
JESD-609代码:e3长度:4.9 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:SOP
封装等效代码:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):250
电源:48 V认证状态:Not Qualified
座面最大高度:1.75 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:YES技术:BIPOLAR
温度等级:COMMERCIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3.9 mmBase Number Matches:1

LT4250HCS8#TRPBF 数据手册

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LT4250L/LT4250H  
Negative 48V  
Hot Swap Controller  
FEATURES  
DESCRIPTION  
Allows Safe Board Insertion and Removal from a  
TheLT®4250L/LT4250Hare8-pin,negative48VHotSwap™  
controllers that allow a board to be safely inserted and  
removed from a live backplane. Inrush current is limited  
to a programmable value by controlling the gate voltage  
of an external N-channel pass transistor. The pass tran-  
sistor is turned off if the input voltage is less than the  
programmable undervoltage threshold or greater than  
the overvoltage 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.  
n
Live –48V Backplane  
n
Circuit Breaker Immunity to Voltage Steps and  
Current Spikes  
n
Programmable Inrush and Short-Circuit Current  
Limits  
n
Pin Compatible With LT1640L/LT1640H  
n
Operates from –18V to –80V  
n
Programmable Overvoltage Protection  
n
Programmable Undervoltage Lockout  
n
Power Good Control Output  
n
Bell-Core Compatible ON/OFF Threshold  
APPLICATIONS  
The LT4250L/LT4250H are available in 8-pin PDIP and  
SO packages  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Hot Swap is a  
trademark of Linear Technology Corporation.  
n
Central Office Switching  
n
–48V Distributed Power Systems  
n
Negative Power Supply Control  
TYPICAL APPLICATION  
Voltage Step on Input Supply  
–48V RTN  
(SHORT PIN)  
–48V RTN  
R4†  
8
549k  
1%  
V
DD  
3
2
V
AND  
UV =  
EE  
DRAIN  
20V/DIV  
UV  
OV  
R5†  
6.49k  
1%  
38.5V  
1
LT4250L  
PWRGD  
UV  
RELEASE  
AT 43V  
R6†  
10k  
1%  
OV =  
71V  
V
SENSE  
5
GATE  
DRAIN  
7
EE  
I
D
(Q1)  
5A/DIV  
4
6
R3†  
1k, 5%  
*
0.1μF  
10V  
C1†  
470nF  
25V  
R2  
10Ω  
5%  
4250 TA01b  
C2†  
15nF  
100V  
–48V  
INPUT 1  
500μs/DIV  
R1†  
0.02Ω  
5%  
2
Q1  
IRF530  
ON/OFF  
1
9
8
+
+
+
–48V  
5V  
V
V
V
IN  
OUT  
SENSE  
INPUT 2  
C3  
0.1μF  
100V  
+
C4  
100μF  
100V  
+
C5  
7
6
5
* DIODES INC. SMAT70A  
TRIM  
100μF  
16V  
THESE COMPONENTS ARE APPLICATION  
SPECIFIC AND MUST BE SELECTED BASED  
UPON OPERATING CONDITIONS AND DESIRED  
PERFORMANCE. SEE APPLICATIONS  
INFORMATION.  
SENSE  
4
V
IN  
OUT  
4250 TA01a  
LUCENT  
JW050A1-E  
4250lhfa  
1

LT4250HCS8#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT4250HCS8#PBF Linear

完全替代

Negative 48V Hot Swap Controller
LT4250LCS8#PBF Linear

完全替代

暂无描述
LT4250LIS8#TRPBF Linear

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LT4250 - Negative 48V Hot Swap Controller; Package: SO; Pins: 8; Temperature Range: -40&am

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