iW1679-50

iW1679-50 Off-Line Digital Green-Mode Quasi-Resonant PWM Controller 1.0 Features ●● Optimized for 5V2A AC/DC adapters/chargers with < 30mW no-load power consumption at 230VAC and fast dynamic load response for both one-time and repetitive load transients ●● Direct drive of low-cost BJT power switch ●● Very tight constant voltage and constant current regulation over entire operating range ●● PrimAccurateTM primary-side feedback eliminates opto-isolators and simplifies design ●● EZ-EMI® design enhances manufacturability ●● Intrinsically low common mode noise ●● Optimized 72kHz maximum PWM switching frequency achieves best size and efficiency ●● Adaptive multi-mode PWM/PFM control improves efficiency ●● Quasi-resonant operation for highest overall efficiency ●● Dynamic base current control ●● No external loop compensation components required ●● Complies with EPA 2.0/CoC Ver5/DoE energyefficiency specifications with ample margin ●● Built...