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UCSR3654SL-D07-T

Description
HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH
File Size220KB,9 Pages
ManufacturerUNISONIC TECHNOLOGIES CO.,LTD
Websitehttp://www.unisonic.com.tw/
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UCSR3654SL-D07-T Overview

HIGH PRECISION CC/CV PRIMARY-SIDE PWM POWER SWITCH

UNISONIC TECHNOLOGIES CO., LTD
UCSR3654S
Preliminary
CMOS IC
HIGH PRECISION CC/CV
PRIMARY-SIDE PWM POWER
SWITCH
DESCRIPTION
DIP-7
The UTC
UCSR3654S
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
UCSR3654S
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
UCSR3654S
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, V
DD
over voltage protection, V
DD
clamp, OTP, leading edge blanking, V
DD
under voltage lockout, etc.
DIP-8
FEATURES
* 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
* V
DD
under-voltage lockout
* High Voltage startup circuit
* Built-in 600V 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
ORDERING INFORMATION
Ordering Number
Lead Free
UCSR3654SL-D07-T
UCSR3654SL-D08-T
Halogen Free
UCSR3654SG-D07-T
UCSR3654SG-D08-T
Package
DIP-7
DIP-8
Packing
Tube
Tube
UCSR3654SL-D07-T
(1)Packing Type
(2)Package Type
(3)Green Package
(1) T: Tube
(2) D07: DIP-7, D08: DIP-8
(3) L: Lead Free, G: Halogen Free and Lead Free
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 9
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