This part is a kind of semiconductor called BD9883FV.

Function of this product has DC-AC Inverter Control IC.

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 ＢＤ９８８３ＡＦ, ＢＤ９８８３ＦＶ ・36V High voltage process ・1ch control with Half-bridge ・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 ○Absolute Maximum Ratings（Ta = 25℃） Parameter Supply Voltage BST BST-ST Voltage Difference Operating Temperature Range Storage Temperature Range Power Dissipation Maximum Junction Temperature Symbol VCC BST BST-SW Topr Tstg Pd Tjmax Limits 30 40 15 -40～+85 -55～+150 550*1(BD9883AF) 650*2(BD9883FV) +150 Unit V V V [ ... ]

BD9883FV PDF Datasheet Download