Products: AC-DC ICs: iW1698

iW1698 Low-Power Off-Line Digital Green-Mode PWM Controller

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

Datasheet
Application Note
White Paper
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