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UCS3654 PDF预览

UCS3654

更新时间: 2024-11-09 01:10:31
品牌 Logo 应用领域
友顺 - UTC /
页数 文件大小 规格书
9页 226K
描述
HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

UCS3654 数据手册

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UNISONIC TECHNOLOGIES CO., LTD  
UCS3654  
Advance  
CMOS IC  
HIGH PRECISION CC/CV  
PRIMARY-SIDE PWM POWER  
SWITCH  
DIP-8  
DESCRIPTION  
The UTC UCS3654 is a primary control switch mode charger  
and adapter applications. The controlled variable is transferred by  
an auxiliary winding from the secondary to the primary side. The  
device integrates PWM controller to enhance the performance of  
discontinuous conduction mode (DCM) flyback converters.  
The UTC UCS3654 operates in primary-side sensing and  
regulation. Opto-coupler and TL431 could be eliminated. It also  
provides off-time modulation to linearly decrease PWM frequency  
under light-load conditions so that low standby power can be  
achieved.  
SOP-8  
The UTC UCS3654 achieves high precision CV/CC regulation  
and high power efficiency. It offers comprehensive protection  
coverage with auto-recovery features including Cycle-by-cycle  
current limiting, VDD over voltage protection, VDD clamp, OTP,  
leading edge blanking, VDD under voltage lockout, etc.  
FEATURES  
* Built-in primary winding inductance  
* Built-in 650V Power MOSFET  
compensation  
* Power on soft start  
* Gate Output Maximum Voltage Clamped at  
15V  
* ±5% constant voltage regulation at universal AC input  
* High precision constant current regulation at universal AC input  
* Primary side control without TL431 and opto-coupler  
* Programmable CV and CC regulation  
* Cycle-by-cycle current limiting  
* Over voltage protection  
* VDD under-voltage lockout  
* Programmable cable compensation in CV mode  
* Flyback topology in DCM operation  
* Frequency hopping to reduce system EMI  
* Built-in leading edge blanking  
ORDERING INFORMATION  
Ordering Number  
Lead Free  
Package  
Packing  
Halogen Free  
UCS3654L-D08-T  
-
UCS3654G-D08-T  
UCS3654G-S08-R  
DIP-8  
Tube  
SOP-8  
Tape Reel  
www.unisonic.com.tw  
Copyright © 2016 Unisonic Technologies Co., Ltd  
1 of 9  
QW-R129-006.b  

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