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LM34919BTLX PDF预览

LM34919BTLX

更新时间： 2024-09-17 05:42:03
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
20页 483K
描述
Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator

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中文翻译

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LM34919BTLX 技术参数

生命周期：Transferred包装说明：,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.62
模拟集成电路 - 其他类型：SWITCHING REGULATORJESD-30 代码：R-PBGA-B10
端子数量：10封装主体材料：PLASTIC/EPOXY
封装形状：RECTANGULAR封装形式：GRID ARRAY
认证状态：Not Qualified表面贴装：YES
端子形式：BALL端子位置：BOTTOM
Base Number Matches：1

LM34919BTLX 数据手册

 浏览型号LM34919BTLX的Datasheet PDF文件第2页浏览型号LM34919BTLX的Datasheet PDF文件第3页浏览型号LM34919BTLX的Datasheet PDF文件第4页浏览型号LM34919BTLX的Datasheet PDF文件第5页浏览型号LM34919BTLX的Datasheet PDF文件第6页浏览型号LM34919BTLX的Datasheet PDF文件第7页 
May 26, 2010  
LM34919B  
Ultra Small 40V, 600 mA Constant On-Time Buck Switching  
Regulator  
General Description  
Features  
The LM34919B Step Down Switching Regulator features all  
of the functions needed to implement a low cost, efficient,  
buck bias regulator capable of supplying 0.6A to the load. This  
buck regulator contains an N-Channel Buck Switch, and is  
available in a micro SMD package. The constant on-time  
feedback regulation scheme requires no loop compensation,  
results in fast load transient response, and simplifies circuit  
implementation. The operating frequency remains constant  
with line and load variations due to the inverse relationship  
between the input voltage and the on-time. The valley current  
limit results in a smooth transition from constant voltage to  
constant current mode when current limit is detected, reduc-  
ing the frequency and output voltage, without the use of  
foldback. Additional features include: VCC under-voltage  
lockout, thermal shutdown, gate drive under-voltage lockout,  
and maximum duty cycle limiter.  
AEC-Q100 Grade 1 qualified (-40°c to 125°c)  
■
■
Maximum switching frequency: 2.6 MHz  
(VIN=14V,Vo=3.3V)  
Input Voltage Range: 6V to 40V  
■
■
■
■
■
■
Integrated N-Channel buck switch  
Integrated start-up regulator  
No loop compensation required  
Ultra-Fast transient response  
Operating frequency remains constant with load current  
and input voltage  
Maximum Duty Cycle Limited During Start-Up  
■
■
■
■
■
■
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Adjustable output voltage  
Valley Current Limit At 0.64A  
Precision internal reference  
Low bias current  
Highly efficient operation  
Thermal shutdown  
Typical Applications  
Automotive Safety and Infotainment  
■
■
■
■
High Efficiency Point-Of-Load (POL) Regulator  
Non-Isolated Telecommunication Buck Regulator  
Secondary High Voltage Post Regulator  
Package  
micro SMD (2mm x 2mm)  
■
Basic Step Down Regulator  
30102731  
© 2010 National Semiconductor Corporation  
301027  
www.national.com  
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