NCP1251 controller equivalent, current-mode pwm controller.
* Fixed−Frequency 65 or 100 kHz Current−Mode Control Operation
* Internal and Adjustable Over Power Protection (OPP) Circuit
* Frequency Foldback Down to 26 k.
* ac−dc Converters for TVs, Set−top Boxes and Printers
* Offline Adapters for Notebooks and Netbooks
MARKING DI.
The controller ground.
Hooking an optocoupler collector to this pin will allow regulation.
A resistive divider from the auxiliary winding to this pin sets the OPP compensation level. When brought above 3 V, the part is fully latched off.
This pin mon.
Image gallery
TAGS
Download (Size : 426.87KB)