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NCP1246ALD100R2G PDF预览

NCP1246ALD100R2G

更新时间： 2024-09-19 01:04:43
品牌 Logo 应用领域
安森美 - ONSEMI 开关光电二极管
页数 文件大小 规格书
39页 1266K
描述
Fixed Frequency Current Mode Controller

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中文翻译

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NCP1246ALD100R2G 技术参数

是否无铅： 不含铅生命周期：Active
包装说明：SOP,Reach Compliance Code：compliant
Factory Lead Time：5 weeks风险等级：5.7
其他特性：CONFIGURED AS FLYBACK CONVERTER模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：28 V最小输入电压：9.3 V
标称输入电压：11 VJESD-30 代码：R-PDSO-G7
JESD-609代码：e3长度：4.9 mm
湿度敏感等级：1功能数量：1
端子数量：7最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE座面最大高度：1.75 mm
表面贴装：YES最大切换频率：100 kHz
温度等级：AUTOMOTIVE端子面层：Tin (Sn)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：3.9 mm
Base Number Matches：1

NCP1246ALD100R2G 数据手册

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NCP1246  
Fixed Frequency Current  
Mode Controller for Flyback  
Converters  
The NCP1246 is a new fixed−frequency current−mode controller  
featuring the Dynamic Self−Supply. This function greatly simplifies  
www.onsemi.com  
MARKING  
the design of the auxiliary supply and the V capacitor by activating  
CC  
the internal startup current source to supply the controller during  
start−up, transients, latch, stand−by etc. This device contains a special  
HV detector which detect the application unplug from the AC input  
line and triggers the X2 discharge current. This HV structure allows  
the brown−out detection as well.  
It features a timer−based fault detection that ensures the detection of  
overload and an adjustable compensation to help keep the maximum  
power independent of the input voltage.  
Due to frequency foldback, the controller exhibits excellent  
efficiency in light load condition while still achieving very low  
standby power consumption. Internal frequency jittering, ramp  
compensation, and a versatile latch input make this controller an  
excellent candidate for the robust power supply designs.  
A dedicated Off mode allows to reach the extremely low no load  
input power consumption via “sleeping” whole device and thus  
minimize the power consumption of the control circuitry.  
DIAGRAM  
8
46XXfff  
ALYWX  
G
SOIC−7  
CASE 751U  
1
46XXfff= Specific Device Code  
XX = A, B or AL  
fff = 065 or 100  
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= Pb−Free Package  
A
L
Y
W
G
PIN CONNECTIONS  
Features  
Latch  
1
2
3
4
8
HV  
• Fixed−Frequency Current−Mode Operation (65 kHz and 100 kHz  
frequency options)  
FB  
CS  
V
CC  
6
5
• Frequency Foldback then Skip Mode for Maximized Performance in  
Light Load and Standby Conditions  
GND  
DRV  
(Top View)  
• Timer−Based Overload Protection with Latched (Option A) or  
Auto−Recovery (Option B) Operation  
• High−voltage Current Source with Brown−Out Detection and  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 38 of this data sheet.  
Dynamic Self−Supply, Simplifying the Design of the V Circuitry  
CC  
• Frequency Modulation for Softened EMI Signature  
• Adjustable Overpower Protection Dependant on the Bulk Voltage  
• Latch−off Input Combined with the Overpower Protection Sensing  
Input  
• V Operation up to 28 V, With Overvoltage Detection  
CC  
• 500/800 mA Source/Sink Drive Peak Current Capability  
Typical Applications  
• 10 ms Soft−Start, 4 ms Soft−Start (AL/BL Versions)  
• Internal Thermal Shutdown  
• AC−DC Adapters for Notebooks, LCD, and Printers  
• Offline Battery Chargers  
• Consumer Electronic Power Supplies  
• Auxiliary/Housekeeping Power Supplies  
• Offline Adapters for Notebooks  
• No−Load Standby Power < 30 mW  
• X2 Capacitor in EMI Filter Discharging Feature  
• These Devices are Pb−Free, Halogen Free/BFR Free  
and are RoHS Compliant  
© Semiconductor Components Industries, LLC, 2015  
1
Publication Order Number:  
March, 2015 − Rev. 6  
NCP1246/D  
1234567...39

中文翻译

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