IW1810 off-line digital green-mode PWM controller integrated with power BJT.

● Primary-side feedback eliminates opto-isolators and
simplifi es design
● Internal 800-V bipolar junction transistor (BJT)
● 64 kHz PWM switching frequency
● No-load power consumption < 100 mW at 230 Vac with
typical application circuit
● Adaptive multi-mode PWM/PFM control improves
effi ciency
● Quasi-resonant operation for highest overall effi ciency
● EZ-EMI ® design to easily meet global EMI standards
● Dynamic BJT base drive current control
● Very tight constant voltage and constant current
regulation with primary-side-only feedback
● No external compensation components required
● Complies with EPA 2.0 energy-effi ciency specifi cations
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