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LM5022

更新时间: 2024-11-23 04:20:07
品牌 Logo 应用领域
美国国家半导体 - NSC 控制器
页数 文件大小 规格书
22页 552K
描述
60V Low Side Controller for Boost and SEPIC

LM5022 数据手册

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January 2007  
LM5022  
60V Low Side Controller for Boost and SEPIC  
General Description  
Features  
The LM5022 is a high voltage low-side N-channel MOSFET  
controller ideal for use in boost and SEPIC regulators. It con-  
tains all of the features needed to implement single ended  
primary topologies. Output voltage regulation is based on  
current-mode control, which eases the design of loop com-  
pensation while providing inherent input voltage feed-forward.  
The LM5022 includes a start-up regulator that operates over  
a wide input range of 6V to 60V. The PWM controller is de-  
signed for high speed capability including an oscillator fre-  
quency range up to 2 MHz and total propagation delays less  
than 100 ns. Additional features include an error amplifier,  
precision reference, line under-voltage lockout, cycle-by-cy-  
cle current limit, slope compensation, soft-start, external syn-  
chronization capability and thermal shutdown. The LM5022 is  
available in the MSOP-10 package.  
Internal 60V Startup Regulator  
1A Peak MOSFET Gate Driver  
VIN Range 6V to 60V  
Duty Cycle Limit of 90%  
Programmable UVLO with Hysteresis  
Cycle-by-Cycle Current Limit  
External Synchronizable (AC-coupled)  
Single Resistor Oscillator Frequency Set  
Slope Compensation  
Adjustable Soft-start  
MSOP-10 Package  
Applications  
Boost Converter  
SEPIC Converter  
Typical Application  
20212201  
© 2007 National Semiconductor Corporation  
202122  
www.national.com  

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