This part is a kind of semiconductor called AM2305.

Function of this product has P-Channel Enhancement Mode MOSFET.

Manufacturers : Axelite

Image and pinout :

Some of the text within the PDF file :

AM2305 P-Channel Enhancement Mode MOSFET Features • -20V/-4A, RDS(ON)=40mΩ (typ.) @ VGS=-4.5V RDS(ON)=55mΩ (typ.) @ VGS=-2.5V Pin Description Top View D • • • Super High Dense Cell Design Reliable and Rugged Lead Free and Green Devices Available (RoHS Compliant) G S SOT-23 S Applications • Power Management in Notebook Computer, Portable Equipment and Battery Powered Systems D www.DataSheet.co.kr G P Channel MOSFET Ordering and Marking Information AM2305 Package R : SOT23-3L Packing Package Packing Blank : Tube A : Taping AM2305 : A5XXX XXX - Date Code Note: AXElite lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. AXElite lead-free products meet or exceed the lead [ ... ]

AM2305 PDF Datasheet Download