RS2123 Datasheet (PTC) - High Precision CC/CV Primary-Side PWM Power Switch

RS2123, High Precision CC/CV Primary-Side PWM Power Switch

RS2123 is a high performance offline PSR controller for low power AC/DC charger and adapter applications.

It operates in primary-side sensing and regulation.

Consequently, opto-coupler and TL431 could be eliminated.

Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as

RS2123 Features

* including Cycle-by-Cycle current limiting, VDD over voltage protection, feedback loop open protection, short circuit protection, built-in leading edge blanking, VDD under voltage lockout (UVLO), etc. TYPICAL CC/CV CURVE FEATURES

* ±5% constant voltage regulation at universal AC input