• Product Brief
• Application Note
• Datasheet
• Order Samples

Features

• Primary-side feedback eliminates opto-isolators and simplifies design
• No-load power consumption < 30mW at 230 Vac (5 star rating)
• Adaptive multi-mode PWM/PFM control improves efficiency
• Quasi-resonant operation for highest overall efficiency and low EMI
• Direct drive of low-cost BJT switch
• Dynamic BJT base current control
• Very tight constant voltage and constant current regulation with primary-side feedback
• Complies with EPA 2.0 efficiency and no-load power specifications with ample margin
• Low start-up current (8 μA typical) Built-in soft start
• Built-in short circuit protection and output overvoltage protection
• Built-in current sense resistor short circuit protection
• No audible noise over entire operating range

Application

• Low power AC/DC adapter/chargers for cell phones, PDAs and digital still cameras
• Linear AC/DC replacement
• 5-Star (under 30mW) rated low power AC/DC adapter/charger