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LM5008SDC

更新时间： 2024-11-26 05:42:23
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器开关
页数 文件大小 规格书
16页 375K
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High Voltage (100V) Step Down Switching Regulator

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April 21, 2009  
LM5008  
High Voltage (100V) Step Down Switching Regulator  
General Description  
Features  
The LM5008 Step Down Switching Regulator features all of  
the functions needed to implement a low cost, efficient, Buck  
bias regulator. This high voltage regulator contains an 100 V  
N-Channel Buck Switch. The device is easy to implement and  
is provided in the MSOP-8 and the thermally enhanced LLP-8  
packages. The regulator is based on a hysteretic control  
scheme using an ON time inversely proportional to VIN. This  
feature allows the operating frequency to remain relatively  
constant. The hysteretic control requires no loop compensa-  
tion. An intelligent current limit is implemented with forced  
OFF time, which is inversely proportional to Vout. This  
scheme ensures short circuit protection while providing min-  
imum foldback. Other protection features include: Thermal  
Shutdown, VCC under-voltage lockout, Gate drive under-volt-  
age lockout, and Max Duty Cycle limiter  
Integrated 100V, N-Channel buck switch  
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Internal VCC regulator  
No loop compensation required  
Ultra-Fast transient response  
On time varies inversely with line voltage  
Operating frequency remains constant with varying line  
voltage and load current  
Adjustable output voltage  
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Highly efficient operation  
Precision internal reference  
Low bias current  
Intelligent current limit protection  
Thermal shutdown  
Typical Applications  
Non-Isolated Telecommunication Buck Regulator  
■
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Secondary High Voltage Post Regulator  
+42V Automotive Systems  
Package  
MSOP - 8  
■
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LLP - 8 (4mm x 4mm)  
Connection Diagram  
20097902  
8-Lead MSOP, LLP  
Ordering Information  
Order Number  
LM5008MM  
Package Type  
NSC Package Drawing  
Supplied As  
1000 Units on Tape and Reel  
3500 Units on Tape and Reel  
1000 Units on Tape and Reel  
4500 Units on Tape and Reel  
1000 Units on Tape and Reel  
4500 Units on Tape and Reel  
MSOP-8  
MUA08A  
LM5008MMX  
LM5008SD  
SDC08A  
SDC08B  
LM5008SDX  
LM5008SDC  
LM5008SDCX  
LLP-8  
© 2009 National Semiconductor Corporation  
200979  
www.national.com  
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与LM5008SDC相关器件

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LM5008SDC/NOPB TI

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 		9.5V 至 95V 宽输入电压、350mA 恒定导通时间非同步降压稳压器 | NGU |
LM5008SDCX NSC

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 		High Voltage (100V) Step Down Switching Regulator
LM5008SDCX/NOPB TI

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 		9.5V 至 95V 宽输入电压、350mA 恒定导通时间非同步降压稳压器 | NGU |
LM5008SDEP TI

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LM5008SDX NSC

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 		High Voltage (100V) Step Down Switching Regulator
LM5008SDX/NOPB NSC

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 		IC 0.61 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, DSO8, 4 X 4 MM, ROHS COMPLIANT,
LM5008SDX/NOPB TI

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LM5008SDXEP TI

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LM5009 NSC

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 		150 mA, 100V Step-Down Switching Regulator
LM5009 TI

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 		150-mA 100-V Step-Down Switching Regulator

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