IW1697
IW1697 is Low-Power Off-Line Digital Green-Mode PWM Controller manufactured by iWatt.
i W1697
Low-Power Off-Line Digital Green-Mode PWM Controller
1.0 Features
- - Primary-side feedback eliminates opto-isolators and simplifies design
- - No-load power consumption < 20 m W at 230 Vac with typical application circuit (5 star rating)
- - Active start-up scheme enables fastest possible startup
- - Fast dynamic load response
- - Adaptive multi-mode PWM/PFM control improves efficiency
- - Quasi-resonant operation for highest overall efficiency
- - EZ-EMI ® design to easily meet global EMI standards
- - Direct drive of low-cost BJT switch
- - Dynamic base current control
- - Very tight constant voltage and constant current regulation with primary-side-only feedback
- - No external pensation ponents required
- - plies with EPA 2.0 energy-efficiency specifications with ample margin
- - Ultra-low start-up current (1.5 μA typical)
- - Built-in soft start
- - Built-in short circuit protection and output overvoltage...
