NCP1249C controller equivalent, high-voltage current-mode pwm controller.
several key
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SOIC−9 NB D SUFFIX CASE 751BP
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NCP1249x65 ALYW G
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protective features: a internal brown−out, a non−dissipative Over Power Protection for a constant m.
* Converters Requiring Peak−power Capability such as
Printers Power Supplies, ac−dc Adapters for Game Stations
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When the voltage on this pin disappears, the controller ensures the
X2−capacitors discharge. Connecting an opto-coupler to this pin allows regulation. The opto−coupler
can pull the feedback pin down and brings the controller in a deep sleep mode.
Thi.
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