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IW1678

Part Number	IW1678
Manufacturer	iWatt
Description	Low-Power Off-line Digital Green-Mode PWM Controller
Published	Oct 31, 2016
Detailed Description	iW1678 Low-Power Off-line Digital Green-Mode PWM Controller 1.0 Features 2.0 Description ●● Primary-side feedback eli...
Datasheet	IW1678 PDF File

Overview

iW1678 Low-Power Off-line Digital Green-Mode PWM Controller 1.
0 Features 2.
0 Description ●● Primary-side feedback eliminates opto-isolators and simplifies design ●● 64-kHz PWM switching frequency ●● No-load power consumption < 100 mW at 230 Vac with tight dynamic load transient response ●● Able to meet < 30 mW no-load power consumption with large value pre-load resistor ●● 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...

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