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UC1100 Scheda tecnica(PDF) 1 Page - Unisonic Technologies

Il numero della parte UC1100
Spiegazioni elettronici  LOW-POWER HIGH PRECISION CC/CV PRIMARY SIDE
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Produttore elettronici  UTC [Unisonic Technologies]
Homepage  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC1100 Scheda tecnica(HTML) 1 Page - Unisonic Technologies

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UNISONIC TECHNOLOGIES CO., LTD
UC1100
Preliminary
CMOS IC
www.unisonic.com.tw
1 of 6
Copyright © 2015 Unisonic Technologies Co., Ltd
QW-R129-007.a
LOW-POWER HIGH PRECISION
CC/CV PRIMARY SIDE
SWITCHING REGULATOR
DESCRIPTION
The UTC UC1100 is a primary control unit for switch mode
charger and adapter applications. The controlled variable is
transferred by an auxiliary winding from the secondary to the
primary side. The device uses Pulse Frequency Modulation (PFM)
method to build discontinuous conduction mode (DCM) flyback
power supplies.
The UTC UC1100 operates in primary-side sensing and
regulation. Opto-coupler and TL431 could be eliminated. It also
eliminates the need of loop compensation circuitry while
maintaining stability. The UTC UC1100 achieves excellent
regulation and high average efficiency, yet meets the requirement
for no-load consumption less than 30mW.
The UTC UC1100 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, output over voltage protection, feedback loop open
protection, short circuit protection, leading edge blanking, VCC
under voltage lockout, etc.
FEATURES
SOT-26
4
5
3
2
1
6
* Primary side control for rectangular constant current and
constant voltage output
* 30mW no-load input power feasible
* Tight CC regulation performance
* Sub-microampere start-up current
* Eliminates control loop compensation circuitry
* Eliminates opto-coupler and secondary CV/CC control
circuitry
* Random frequency modulation to reduce system EMI
* Flyback topology in DCM operation
* Open feedback protection
* Built-in soft start
* Short circuit protection
ORDERING INFORMATION
Ordering Number
Package
Packing
UC1100G-AG6-R
SOT-26
Tape Reel


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