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UCS3654L-D08-T 데이터시트(PDF) 1 Page - Unisonic Technologies

부품명 UCS3654L-D08-T
상세설명  HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH
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제조업체  UTC [Unisonic Technologies]
홈페이지  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UCS3654L-D08-T 데이터시트(HTML) 1 Page - Unisonic Technologies

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UNISONIC TECHNOLOGIES CO., LTD
UCS3654
Advance
CMOS IC
www.unisonic.com.tw
1 of 9
Copyright © 2015 Unisonic Technologies Co., Ltd
QW-R129-006.a
DIP-8
HIGH PRECISION CC/CV
PRIMARY-SIDE PWM POWER
SWITCH
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.
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 650V Power MOSFET
* ±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
* Programmable cable compensation in CV mode
* Flyback topology in DCM operation
* Frequency hopping to reduce system EMI
* Built-in leading edge blanking
* Built-in primary winding inductance
compensation
* Power on soft start
* Gate Output Maximum Voltage Clamped at
15V
* Cycle-by-cycle current limiting
* Over voltage protection
* VDD under-voltage lockout
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
Package
Packing
UCS3654L-D08-T
UCS3654G-D08-T
DIP-8
Tube


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