This part is a kind of semiconductor called APM4435.
Function of this product has P-Channel Enhancement Mode MOSFET.
Manufacturers : Anpec Electronics Coropration
Image and pinout :
Some of the text within the PDF file :
APM4435 P-Channel Enhancement Mode MOSFET Features Pin Description • -30V/-8A, RDS(ON) = 16mΩ(typ.) @ VGS = -10V RDS(ON) = 24mΩ(typ.) @ VGS = -4.5V • Super High Density Cell Design • Reliable and Rugged • SO-8 Package Applications S1 S2 S3 G4 8D 7D 6D 5D SO − 8 S SS • Power Management in Notebook Computer, Portable Equipment and Battery Powered Systems G Ordering and Marking Information DD DD P-Channel MOSFET APM 4435 APM 4435 H a n d lin g C o d e Temp. Range Package Code APM 4435 XXXXX Package Code K : SO -8 O peration Junction Tem p. R ange C : -55 to 125°C H andling C ode TU : Tube TR : Tape & Reel XXX XX - D ate Code Absolute Maximum Ratings (TA = 25°C unless otherwise noted) Symbol VDSS VGSS ID IDM Parameter Drain-Source Voltage Gate-Source Voltage [ ... ]