NCP1249C Datasheet - ON Semiconductor

NCP1249C High-Voltage Current-Mode PWM Controller

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. This pin monitors the primary peak cu.

NCP1249C, NCP1249D High-Voltage CurrentMode PWM Controller Featuring Peak Power Excursion and Self-Relaxing Off Mode The NCP1249 is a highly integrated high voltage PWM controller http://onsemi.com capable of delivering a rugged and high performance offline power supply with extremely low no load consumption. With a supply range MARKING DIAGRAM up to 30 V, the controller hosts a jittered 65 kHz switching circuitry operated in peak current mode control. When the power on.

NCP1249C Features

* several key 9 1 SOIC

* 9 NB D SUFFIX CASE 751BP 9 NCP1249x65 ALYW G 1 protective features: a internal brown

* out, a non

* dissipative Over Power Protection for a constant maximum output current regardless of the input voltage and two latched over voltage protection inputs

NCP1249C-ONSemiconductor.pdf