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LT4256-1CS8 PDF预览

LT4256-1CS8

更新时间: 2024-11-11 03:52:11
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
16页 268K
描述
Positive High Voltage Hot Swap Controllers

LT4256-1CS8 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:SOIC包装说明:SOP, SOP8,.25
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.1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:e0长度:4.9 mm
湿度敏感等级:1信道数量:2
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):235
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):3.9 mA最大供电电压 (Vsup):80 V
最小供电电压 (Vsup):10.8 V标称供电电压 (Vsup):48 V
表面贴装:YES温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)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:20宽度:3.9 mm
Base Number Matches:1

LT4256-1CS8 数据手册

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LT4256-1/LT4256-2  
Positive High Voltage  
Hot Swap Controllers  
U
DESCRIPTIO  
FEATURES  
The LT®4256-1/LT4256-2 are high voltage Hot SwapTM  
controllers that allow a board to be safely inserted and  
removedfromalivebackplane.Aninternaldriverdrivesan  
external N-channel MOSFET switch to control supply  
voltages ranging from 10.8V to 80V.  
Allows Safe Board Insertion and Removal from a  
Live Backplane  
Controls Supply Voltage from 10.8V to 80V  
Foldback Current Limiting  
Overcurrent Fault Detection  
Drives an External N-Channel MOSFET  
The LT4256-1/LT4256-2 features an adjustable analog  
foldbackcurrentlimit.Ifthesupplyremainsincurrentlimit  
for more than a programmable time, the N-channel  
MOSFETshutsoffandthePWRGDoutputassertslow.The  
LT4256-2 automatically restarts after a time-out delay.  
The LT4256-1 latches off until the UV pin is cycled low.  
Programmable Supply Voltage Power-Up Rate  
Undervoltage Protection  
Latch Off Operation Mode (LT4256-1)  
Automatic Retry (LT4256-2)  
Available in an 8-Pin SO Package  
U
The PWRGD output indicates when the output voltage  
rises above a programmed level. An external resistor  
string from VCC provides programmable undervoltage  
protection.  
APPLICATIO S  
Hot Board Insertion  
Electronic Circuit Breaker/Power Bussing  
TheLT4256canbeusedasanupgradetoLT1641designs.  
See Table 1 on page 14 for upgraded specifications.  
Industrial High Side Switch/Circuit Breaker  
24V/48V Industrial/Alarm Systems  
Ideally Suited for 12V, 24V and 48V Distributed  
The LT4256-1 and LT4256-2 are available in an 8-pin SO  
package that is pin compatible with the LT1641.  
Power Systems  
48V Telecom Systems  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Hot Swap is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
48V, 2A Hot Swap Controller  
LT4256 Start-Up Behavior  
0.02  
IRF530  
V
48V  
2A  
OUT  
V
IN  
48V  
SMAT70A  
(SHORT PIN)  
CMPZ5241B  
11V  
C
L
VIN  
8
7
50V/DIV  
10Ω  
36.5k  
4.02k  
27k  
V
SENSE  
CC  
64.9k  
10nF  
100Ω  
1
6
VOUT  
50V/DIV  
UV  
GATE  
LT4256-1/  
LT4256-2  
0.1µF  
8.06k  
INRUSH  
CURRENT  
500mA/DIV  
2
3
FB  
PWRGD  
50V/DIV  
PWRGD  
PWRGD  
GND  
4256 TA01  
5
2.5ms/DIV  
4256 TA02  
UV = 36V  
PWRGD = 40V  
TIMER  
33nF  
GND  
4
425612f  
1

LT4256-1CS8 替代型号

型号 品牌 替代类型 描述 数据表
LT4256-1IS8 Linear

类似代替

Positive High Voltage Hot Swap Controllers
LM5069MM-2/NOPB TI

功能相似

LM5069 Positive High Voltage Hot Swap / Inrush Current Controller with Power Limiting

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