IW1706

● Primary-side feedback eliminates opto-isolators and

simplifi es design

● Adaptively controlled soft start-up enables fast and

smooth start-up for a wide range of capacitive loads

(from 330 μF to 6000 μF)

● Very tight constant voltage regulation

● EZ-EMI ® design enhances manufacturability

● Intrinsically low common mode noise

● Optimized 72 kHz maximum PWM switching frequency

achieves best size and effi ciency

● Adaptive multi-mode PWM/PFM control improves

effi ciency

● Quasi-resonant operation for highest overall effi ciency

● Direct drive of low-cost BJT switch

● Dynamic base current control

● No external compensation components required

● Complies with EPA 2.0 energy-effi ciency specifi cations

with ample margin

● Built-in short circuit protection and output overvoltage

protection

● Built-in current sense resistor short circuit protection

● Constant current control enables output current limit and

overload protection