This part is a kind of semiconductor called AP9565BGH.
Function of this product has P-CHANNEL ENHANCEMENT MODE POWER MOSFET.
Manufacturers : Advanced Power Electronics
Image and pinout :

Some of the text within the PDF file :
AP9565BGH/J RoHS-compliant Product Advanced Power Electronics Corp. ▼ Lower Gate Charge ▼ Simple Drive Requirement ▼ Fast Switching Characteristic G S D P-CHANNEL ENHANCEMENT MODE POWER MOSFET BVDSS RDS(ON) ID -40V 52mΩ -17A Description The Advanced Power MOSFETs from APEC provide the designer with the best combination of fast switching, ruggedized device design, low on-resistance and cost-effectiveness. The TO-252 package is universally preferred for all commercialindustrial surface mount applications and suited for low voltage applications such as DC/DC converters. The through-hole version (AP9565BGJ) is available for low-profile applications. G D S TO-252(H) G D S TO-251(J) Absolute Maximum Ratings Symbol VDS VGS ID@TC=25℃ ID@TC=100℃ IDM PD@TC=25℃ TSTG TJ Parameter [ ... ]
AP9565BGH PDF Datasheet Download
