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NCP1239CD65R2G

更新时间： 2024-12-01 00:50:11
品牌 Logo 应用领域
安森美 - ONSEMI 开关
页数 文件大小 规格书
26页 243K
描述
Fixed Frequency Current‐Mode Controller for Flyback Converter

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中文翻译

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NCP1239CD65R2G 技术参数

是否无铅： 不含铅生命周期：Active
Reach Compliance Code：compliantFactory Lead Time：1 week
风险等级：5.65模拟集成电路 - 其他类型：SWITCHING CONTROLLER
JESD-609代码：e3湿度敏感等级：1
峰值回流温度（摄氏度）：NOT SPECIFIED端子面层：Tin (Sn)
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

NCP1239CD65R2G 数据手册

 浏览型号NCP1239CD65R2G的Datasheet PDF文件第2页浏览型号NCP1239CD65R2G的Datasheet PDF文件第3页浏览型号NCP1239CD65R2G的Datasheet PDF文件第4页浏览型号NCP1239CD65R2G的Datasheet PDF文件第5页浏览型号NCP1239CD65R2G的Datasheet PDF文件第6页浏览型号NCP1239CD65R2G的Datasheet PDF文件第7页 
NCP1239  
Fixed Frequency  
Current‐Mode Controller for  
Flyback Converter  
The NCP1239 is a fixed-frequency current-mode controller  
featuring a high-voltage start-up current source to provide a quick and  
lossless power-on sequence. This function greatly simplifies the  
www.onsemi.com  
design of the auxiliary supply and the V capacitor by activating the  
CC  
internal start-up current source to supply the controller during start-up,  
transients, latch, stand-by etc.  
SOIC−7  
With a supply range up to 35 V, the controller hosts a jittered 65 or  
100-kHz switching circuitry operated in peak current mode control.  
When the power on the secondary side starts to decrease, the controller  
automatically folds back its switching frequency down to minimum  
level of 26 kHz. As the power further goes down, the part enters skip  
cycle while limiting the peak current that insures excellent efficiency  
in light load condition.  
NCP1239 features a timer-based fault detection circuitry that  
ensures a quasi-flat overload detection, independent of the input  
voltage.  
CASE 751U  
PIN CONNECTIONS  
1
2
3
4
8
HV  
Fault  
FB  
6
5
VCC  
DRV  
CS  
GND  
Features  
• Fixed-Frequency 65-kHz or 100-kHz Current-Mode Control  
Operation  
• Frequency Foldback Down to 26 kHz and Skip Mode to  
Maximize Performance in Light Load Conditions  
• Adjustable Over Power Protection (OPP) Circuit  
MARKING DIAGRAM  
8
• High-Voltage Current Source with Brown-Out (BO) Detection  
• Internal Slope Compensation  
1239xfff  
ALYWX  
G
• Internal Fixed Soft-Start  
• Frequency Jittering in Normal and Frequency Foldback Modes  
1
• 64-ms Timer-Based Short-Circuit Protection with Auto-Recovery  
or Latched Operation  
1239xfff = Specific Device Code  
• Pre-Short Ready for Latched OCP Versions  
x = A, B, C, D, E, F, G, H or I  
fff = 065 or 100  
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
• Latched OVP on VCC – Autorecovery for C and E Versions  
• Latched OVP/OTP Input for Improved Robustness  
A
L
Y
W
G
• 35-V V Operation  
CC  
•
500 mA Peak Source/Sink Drive Capability  
= Pb−Free Package  
• Internal Thermal Shutdown  
• Extremely Low No-Load Standby Power  
ORDERING INFORMATION  
• Pin-to-Pin Compatible with the Existing NCP1236/1247 Series  
• These Devices are Pb-Free and are RoHS Compliant  
See detailed ordering and shipping information on page 25 of  
this data sheet.  
Typical Applications  
• AC-DC Converters for TVs, Set-Top Boxes and Printers  
• Offline Adapters for Notebooks and Netbooks  
© Semiconductor Components Industries, LLC, 2016  
1
Publication Order Number  
September, 2016 − Rev. 12  
NCP1239/D  
1234567...26

中文翻译

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