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CS51021A

更新时间： 2024-09-10 04:12:43
品牌 Logo 应用领域
安森美 - ONSEMI 控制器
页数 文件大小 规格书
11页 130K
描述
Enhanced Current Mode PWM Controller

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中文翻译

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CS51021A 数据手册

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CS51021A, CS51022A,  
CS51023A, CS51024A  
Enhanced Current Mode  
PWM Controller  
The CS51021A/2A/3A/4A Fixed Frequency PWM Current Mode  
Controller family provides all necessary features required for AC−DC  
or DC−DC primary side control. Several features are included  
eliminating the additional components needed to implement them  
externally. In addition to low startup current (75 mA) and high  
frequency operation capability, the CS51021A/2A/3A/4A family  
includes overvoltage and undervoltage monitoring, externally  
programmable dual threshold overcurrent protection, current sense  
leading edge blanking, current slope compensation, accurate duty cycle  
control and an externally available 5.0 V reference. The CS51021A  
and CS51023A feature bidirectional synchronization capability, while  
the CS51022A and CS51024A offer a sleep mode with 100 mA  
maximum IC current consumption. The CS51021A/2A/3A/4A family  
is available in a 16 lead narrow body SOIC package.  
http://onsemi.com  
SOIC−16  
D SUFFIX  
CASE 751B  
16  
1
TSSOP−16  
DTB SUFFIX  
CASE 948F  
16  
1
Device  
CS51021A  
Sleep/Synch  
Synch  
V
Start/Stop  
CC  
PIN CONNECTIONS AND  
MARKING DIAGRAMS  
8.25 V/7.7 V  
8.25 V/7.7 V  
13 V/7.7 V  
13 V/7.7 V  
CS51022A  
CS51023A  
CS51024A  
Sleep  
Synch  
16  
1
GATE  
V
C
Sleep  
I
PGND  
SENSE  
SLEEP or SYNC  
V
V
CC  
SLOPE  
UV  
REF  
Features  
LGND  
SS  
• 75 mA Max. Startup Current  
OV  
• Fixed Frequency Current Mode Control  
• 1.0 MHz Switching Frequency  
• Undervoltage Protection Monitor  
R C  
COMP  
V
FB  
T
T
I
SET  
1
16  
• Overvoltage Protection Monitor with Programmable Hysteresis  
• Programmable Dual Threshold Overcurrent Protection with  
Delayed Restart  
• Programmable Soft Start  
• Accurate Maximum Duty Cycle Limit  
• Programmable Slope Compensation  
• Leading Edge Current Sense Blanking  
• 1.0 A Sink/Source Gate Drive  
x
A
= Specific Device Code  
= Assembly Location  
WL, L = Wafer Lot  
= Year  
Y
WW, W = Work Week  
G or G = Pb−Free Package  
• Bidirectional Synchronization (CS51021A/3A)  
• 50 ns PWM Propagation Delay  
• 100 mA Max Sleep Current (CS51022A/4A)  
• Pb−Free Packages are Available*  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 9 of this data sheet.  
*For additional information on our Pb−Free strategy and soldering details, please  
download the ON Semiconductor Soldering and Mounting Techniques  
Reference Manual, SOLDERRM/D.  
©
Semiconductor Components Industries, LLC, 2006  
1
Publication Order Number:  
February, 2006 − Rev. 8  
CS51021A/D  
1234567...11

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