This part is a kind of semiconductor called 1207A.

Function of this product has NCP1207A.

Manufacturers : ON Semiconductor

Image and pinout :

1207A image and datasheet pinout

Some of the text within the PDF file : NCP1207A PWM Current−Mode Controller for Free Running Quasi−Resonant Operation The NCP1207A combines a true current mode modulator and a demagnetization detector to ensure full borderline/critical Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi−Resonant operation). Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level. As this happens at low peak current, no audible noise can be heard. An internal 8.0 ms timer prevents the free−run frequency to exceed 100 kHz (therefore below the 150 kHz CISPR−22 EMI starting limit), while the skip adjustment capability lets the user select the frequency at which the burst foldback takes place. The Dynami [ ... ]

1207A PDF Datasheet Download

2017/10/09 07:05 2017/10/09 07:05