NCP1249D - 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 CurrentÂMode 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
NCP1249D 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
