IW1697 - iWatt

IW1697 Low-Power Off-Line Digital Green-Mode PWM Controller

iW1697 Low-Power Off-Line Digital Green-Mode PWM Controller 1.0 Features ●● Primary-side feedback eliminates opto-isolators and simplifies design ●● No-load power consumption < 20 mW at 230 Vac with typical application circuit (5 star rating) ●● Active start-up scheme enables fastest possible startup ●● Fast dynamic load response ●● Adaptive multi-mode PWM/.

Features

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● Primary-side feedback eliminates opto-isolators and simplifies design
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● No-load power consumption < 20 mW at 230 Vac with typical application circuit (5 star rating)
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● Active start-up scheme enables fastest possible startup
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● Fast dynamic load response
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● Adaptive multi-mode PWM/PFM control improves efficiency
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● Quasi-resonant operation for highest overall efficiency
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● EZ-EMI ® design to easily meet global EMI standards
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● Direct drive of low-cost BJT switch
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● Dynamic base current control
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● Very tight constant voltage and constant current regulation with primary-side-only feedback
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