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NCP1246AD065R2G

更新时间： 2024-11-07 12:27:39
品牌 Logo 应用领域
安森美 - ONSEMI 转换器控制器
页数 文件大小 规格书
39页 1311K
描述
Fixed Frequency Current Mode Controller for Flyback Converters

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中文翻译

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NCP1246AD065R2G 技术参数

是否无铅： 不含铅生命周期：Active
包装说明：SOP, SOP7/8,.25针数：7
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：15 weeks
风险等级：1.52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 V
JESD-30 代码：R-PDSO-G7JESD-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
封装等效代码：SOP7/8,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Switching Regulator or Controllers表面贴装：YES
最大切换频率：65 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
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

NCP1246AD065R2G 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  
http://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.  
DIAGRAM  
8
46Xff  
ALYWX  
G
SOIC−7  
CASE 751U  
1
46Xff = Specific Device Code  
X = A or B  
ff = 65 or 100  
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= Pb−Free Package  
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.  
A
L
Y
W
G
PIN CONNECTIONS  
Latch  
FB  
1
2
3
4
8
HV  
Features  
• Fixed−Frequency Current−Mode Operation (65 kHz and 100 kHz  
frequency options)  
• Frequency Foldback then Skip Mode for Maximized Performance in  
Light Load and Standby Conditions  
V
CC  
6
5
CS  
GND  
DRV  
(Top View)  
• Timer−Based Overload Protection with Latched (Option A) or  
Auto−Recovery (Option B) Operation  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 38 of this data sheet.  
• High−voltage Current Source with Brown−Out Detection and  
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  
• These Devices are Pb−Free and Halogen Free/BFR Free  
CC  
• 500/800 mA Source/Sink Drive Peak Current  
Typical Applications  
Capability  
• AC−DC Adapters for Notebooks, LCD, and Printers  
• Offline Battery Chargers  
• Consumer Electronic Power Supplies  
• Auxiliary/Housekeeping Power Supplies  
• Offline Adapters for Notebooks  
• 10 ms Soft−Start  
• Internal Thermal Shutdown  
• No−Load Standby Power < 30 mW  
• X2 Capacitor in EMI Filter Discharging Feature  
This document contains information on a product under development. ON Semiconductor  
reserves the right to change or discontinue this product without notice.  
© Semiconductor Components Industries, LLC, 2012  
1
Publication Order Number:  
October, 2012 − Rev. 1  
NCP1246/D  
1234567...39

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