This part is a kind of semiconductor called BD9240F.

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 NAME OF PRODUCT Silicon Monolithic Integrated Circuit DC-AC Inverter Control IC TYPE FUNCTION ＢＤ９２４０Ｆ / ＢＤ９２４０ＦＶ ・ 20V High voltage process ・ 2CH control with Push-Pull ・ Lamp current and voltage sense feed back control ・ Sequencing easily achieved with Soft Start Control ・ Short circuit protection with Timer Latch ・ Under Voltage Lock Out ・ Mode-selectable the operating or stand-by mode by stand-by pin ・ ・ Automatic Judge function for External synchronization of lamp oscillation BURST mode controlled by PWM and DC input ○ Absolute Maximum Ratings（Ｔａ＝２５℃） Parameter Supply Voltage Operating Temperature Range Storage Temperature Range Maximum Junction Temperature Power Dissipation *1 *2 Symbol VCC Topr T [ ... ]

BD9240F PDF Datasheet Download