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LM5021MM-2 PDF预览

LM5021MM-2

更新时间: 2024-11-23 12:06:07
品牌 Logo 应用领域
德州仪器 - TI 开关光电二极管控制器
页数 文件大小 规格书
23页 1061K
描述
LM5021 AC-DC Current Mode PWM Controller

LM5021MM-2 数据手册

 浏览型号LM5021MM-2的Datasheet PDF文件第2页浏览型号LM5021MM-2的Datasheet PDF文件第3页浏览型号LM5021MM-2的Datasheet PDF文件第4页浏览型号LM5021MM-2的Datasheet PDF文件第5页浏览型号LM5021MM-2的Datasheet PDF文件第6页浏览型号LM5021MM-2的Datasheet PDF文件第7页 
LM5021  
www.ti.com  
SNVS359D MAY 2005REVISED MARCH 2013  
LM5021 AC-DC Current Mode PWM Controller  
Check for Samples: LM5021  
1
FEATURES  
DESCRIPTION  
The LM5021 off-line pulse width modulation (PWM)  
controller contains all of the features needed to  
implement highly efficient off-line single-ended  
flyback and forward power converters using current-  
mode control. The LM5021 features include an ultra-  
low (25 µA) start-up current, which minimizes power  
losses in the high voltage start-up network. A skip  
cycle mode reduces power consumption with light  
loads for energy conserving applications (ENERGY  
STAR®, CECP, etc.). Additional features include  
under-voltage lockout, cycle-by-cycle current limit,  
hiccup mode overload protection, slope com-  
pensation, soft-start and oscillator synchronization  
capability. This high performance 8-pin IC has total  
propagation delays less than 100nS and a 1MHz  
capable oscillator that is programmed with a single  
resistor.  
2
Ultra Low Start-up Current (25 µA maximum)  
Current Mode Control  
Skip Cycle Mode for Low Standby Power  
Single Resistor Programmable Oscillator  
Synchronizable Oscillator  
Adjustable Soft-Start  
Integrated 0.7A Peak Gate Driver  
Direct Opto-Coupler Interface  
Maximum Duty Cycle Limiting (80% for  
LM5021-1 or 50% for LM5021-2)  
Slope Compensation for (LM5021-1 Only)  
Under Voltage Lockout (UVLO) with Hysteresis  
Cycle-by-Cycle Over-Current Protection  
Hiccup Mode for Continuous Overload  
Protection  
WHITE SPACE  
Leading Edge Blanking of Current Sense  
Signal  
Packages: VSSOP-8 or PDIP-8  
Simplified Application Diagram  
VOUT  
+
AC  
90 ~ 264 Vac  
VCC  
VIN  
LM5021  
RT  
SS  
OUT  
CS  
+
COMP GND  
FEEDBACK  
WITH  
ISOLATION  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2005–2013, Texas Instruments Incorporated  

LM5021MM-2 替代型号

型号 品牌 替代类型 描述 数据表
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