IW1700

● Zero power consumption at no-load with lowest system

cost (< 5 mW at 230 Vac with typical application circuit)

● Intelligent low power management achieves ultra-low

operating current at no-load

● Adaptive load transient detection and fast response

● Very tight constant voltage and constant current

regulation over entire operating range

● Primary-side feedback eliminates opto-isolators and

simplifi es design

● EZ-EMI ® design enhances manufacturability

● Intrinsically low common mode noise

● Optimized 72 kHz maximum PWM switching frequency

achieves best size and effi ciency

● Active start-up scheme enables fastest possible start-up

● Adaptive multi-mode PWM/PFM control improves

effi ciency

● Quasi-resonant operation for highest overall effi ciency

● Direct drive of low-cost BJT switch

● No external compensation components required

● Complies with EPA 2.0 energy-effi ciency specifi cations

with ample margin

● 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