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UCC28720
SLUSBE8B – MAY 2013 – REVISED SEPTEMBER 2015
UCC28720 Constant-Voltage, Constant-Current Controller With Primary-Side Regulation
1 Features
•1 < 10-mW No-Load Power • Primary-Side Regulation (PSR) Eliminates Opto-
Coupler • ±5% Voltage and Current Regulation Across Line
and Load • 700-V Start-Up Switch • 80-kHz Maximum Switching Frequency Enables
High-Power Density Charger Designs • Quasi-Resonant Valley-Switching Operation for
Highest Overall Efficiency • Wide VDD Range Allows Small Bias Capacitor • Dynamic BJT Drive • Overvoltage, Low-Line, and Overcurrent
Protection Functions • Programmable Cable Compensation • SOIC-7 Package
2 Applications
• USB-Compliant Adapters and Chargers for Consum