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LTC7860EMSE#TRPBF

更新时间： 2024-11-28 15:44:39
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
26页 808K
描述
LTC7860 - High Efficiency Switching Surge Stopper; Package: MSOP; Pins: 12; Temperature Range: -40°C to 85°C

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中文翻译

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LTC7860EMSE#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：MSOP-12
针数：12Reach Compliance Code：compliant
风险等级：5.68Base Number Matches：1

LTC7860EMSE#TRPBF 数据手册

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LTC7860  
High Efficiency Switching  
Surge Stopper  
DescripTion  
FeaTures  
TheLTC®7860highefficiencysurgestopperprotectsloads  
from high voltage transients. High efficiency permits  
higher currents and smaller solution sizes. During an  
input overvoltage event, such as a load dump in vehicles,  
the LTC7860 controls the gate of an external MOSFET to  
act as a switching DC/DC regulator (PROTECTIVE PWM  
mode). This operation regulates the output voltage to a  
safe level, allowing the loads to operate through the input  
over-voltage event. During normal operation (SWITCH-  
ON mode), the LTC7860 turns on the external MOSFET  
continuously, passing the input voltage through to the  
output. An internal comparator limits the voltage across  
the current sense resistor and regulates the maximum  
output current to protect against overcurrent faults.  
n
High Efficiency V  
Clamp Stops High Voltage  
OUT  
Input Surges  
n
SWITCH-ON Mode 100% Duty Cycle for Normal Operation  
PROTECTIVE PWM Mode for Transients and Faults  
n
n
n
n
n
n
n
n
n
n
n
n
V Pin to SGND Range: 3.5V to 60V  
IN  
+
External Input Voltage is Extendable to 200V  
Adjustable Output Voltage Clamp  
Adjustable Output Overcurrent Protection  
Power Inductor Improves Input EMI in Normal Operation  
Programmable Fault Timer  
Adjustable Soft-Start for Input Inrush Current Limiting  
4.5% Retry Duty Cycle During Faults  
Adjustable Switching Frequency: 50kHz to 850kHz  
Optional Reverse Input Voltage Protection  
Available in Thermally Enhanced 12-lead MSOP Package  
An adjustable timer limits the time that the LTC7860 can  
spend in overvoltage or overcurrent regulation. When the  
timer expires, the external MOSFET is turned off until the  
LTC7860 restarts after a cool down period. By strictly  
limiting the time in PROTECTIVE PWM Mode when the  
power loss is high, the components and thermal design  
can be optimized for normal operation and safely oper-  
ate through high voltage input surges and/or overcurrent  
faults. An additional PMOS can be added for reverse  
battery protection.  
applicaTions  
n
Industrial and Automotive Power  
Telecom Power  
Vehicle Power Including ISO7637  
Military Power Including MIL1275  
n
n
n
L, LT, LTC, LTM, OPTI-LOOP, Linear Technology, Burst Mode 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. Protected by U.S. Patents including 5731694.  
Typical applicaTion  
V
V
OUT  
IN  
6.8µH  
12mΩ  
60V MAX  
12V NOM  
3.5V MIN  
18V MAX  
12V NOM  
3.5V MIN  
5A  
PROTECTIVE PWM: VOUT Clamped  
to 18V During a VIN Surge  
10µF  
60V INPUT SURGE  
18V ADJUSTABLE CLAMP  
100ms/DIV  
C
= 22µF  
TMR  
1M  
V
V
IN  
FBN  
10V/DIV  
V
FB  
FREQ  
CAP  
RUN  
ITH  
10µF  
0.47µF  
V
OUT  
10V/DIV  
LTC7860  
TMR  
22µF  
V
TMR  
1V/DIV  
48.7k  
680pF  
0.1µF  
SS  
10k  
7860 TA01b  
0.1µF  
SGND PGND  
7860 TA01a  
7860f  
1
For more information www.linear.com/LTC7860  
1234567...26

中文翻译

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LTC7860EMSE#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC7860EMSE#PBF Linear

完全替代

 LTC7860 - High Efficiency Switching Surge Stopper; Package: MSOP; Pins: 12; Temperature Ra

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