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NCP1361BABAYSNT1G PDF预览

NCP1361BABAYSNT1G

更新时间: 2024-11-09 11:11:11
品牌 Logo 应用领域
安森美 - ONSEMI 控制器
页数 文件大小 规格书
29页 935K
描述
低功耗离线恒定电流 PWM 电流模式控制器

NCP1361BABAYSNT1G 数据手册

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DATA SHEET  
www.onsemi.com  
MARKING  
DIAGRAMS  
Low Power Offline Constant  
Current PWM Current-Mode  
Controller with/without  
High Voltage Startup  
Current Source  
8
SOIC−7  
CASE 751U  
XXXXX  
ALYWX  
G
1
TSOP−6  
CASE 318G  
xxxAYWG  
G
NCP1361, NCP1366  
1
1
The NCP1361/66 offers a new solution targeting output power  
levels from a few watts up to 20 W in a universal−mains flyback  
application. Due to a novel method this new controller offers a  
primary−side constant current control, saving secondary−side  
components to perform current regulation.  
The NCP1361/66 operates in valley−lockout quasi−resonant peak  
current mode control mode at nominal load to provide high efficiency.  
When the secondary−side power starts diminishing, the switching  
frequency naturally increases until a voltage−controlled oscillator  
(VCO) takes the lead, synchronizing the MOSFET turn−on in a  
drain−source voltage valley. The frequency is thus reduced by  
stepping into successive valleys until the number 4 is reached. Beyond  
this point, the frequency is linearly decreased in valley−switching  
mode until a minimum is hit. Valley lockout during the first four  
drain−source valleys prevents erratic discrete jumps and provides  
good efficiency in lighter load situations.  
A
L
Y
W
G
= Assembly Location  
= Wafer Lot  
= Year  
= Work Week  
= Pb−Free Package  
(Note: Microdot may be in either location)  
ORDERING INFORMATION  
See detailed ordering and shipping information on page 25 of  
this data sheet.  
Features  
10% Current Regulation  
560 V Startup Current Source  
No Frequency Clamp, 80 or 110 kHz Maximum Switching  
Frequency Options  
Quasi−Resonant Operation with Valley Switching Operation  
Fixed Peak Current & Deep Frequency Foldback @ Light Load  
Operation  
External Constant Voltage Feedback Adjustment  
Cycle by Cycle Peak Current Limit  
Built−In Soft−Start  
Over & Under Output Voltage Protection  
Wide Operation V Range (up to 28 V)  
CC  
Low Start−up Current (2.5 mA typ.) with NCP1361  
Clamped Gate−drive Output for MOSFET  
CS & Vs/ZCD pin Short and Open Protection  
Internal Temperature Shutdown  
Less than 30 mW No−Load Performance at High Line with  
NCP1366 Version  
These are Pb−Free Devices  
Typical Applications  
Low power ac−dc Adapters for Chargers  
Ac−dc USB chargers for Cell Phones, Tablets and Cameras  
© Semiconductor Components Industries, LLC, 2016  
1
Publication Order Number:  
August, 2022 − Rev. 4  
NCP1361/D  

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