This part is a kind of semiconductor called BD9275F.
Function of this product has Silicon Monolithic Integrated Circuit.
Manufacturers : Rohm
Image and pinout :
Some of the text within the PDF file :
1/4 STRUCTURE Silicon Monolithic Integrated Circuit NAME OF PRODUCT DC-AC Inverter Control IC TYPE FUNCTION ＢＤ９２７５Ｆ ・Using 20V process / 1ch control with Push-Pull ・Accuracy of drive output frequency：3.5%（IC Only/Built-in CT Capacitor） ・High accuracy timer latch current(±15%) ・Built-in FAIL function ・Adjustable latch timing ・Adjustable slow start time ・Lamp current and voltage sense feedback control ・Mode-selectable the operating or stand-by mode by STB pin (Typ.=0uA ) ○Absolute Maximum Ratings（Ta = 25℃） Parameter Supply Voltage OUTPUT PIN Voltage Operating Temperature Range Storage Temperature Range Maximum Junction Temperature Power Dissipation *1 Symbol VCC N1, N2 Topr Tstg Tjmax Pd Limits 20 20 -40～+85 -55～+150 +150 SOP18:562* [ ... ]