This part is a kind of semiconductor called AM9435M8R.
Function of this product has MOSFET -30V P-CHANNEL ENHANCEMENT MODE.
Manufacturers : AiT Semiconductor
Image and pinout :

Some of the text within the PDF file :
AiT Semiconductor Inc. www.ait-ic.com AM9435 MOSFET -30V P-CHANNEL ENHANCEMENT MODE DESCRIPTION The AM9435 is the P-Channel logic enhancement mode power field effect transistor is produced using high cell density, advanced trench technology to provide excellent RDS(ON). FEATURES -30V/-5.8A, RDS(ON)=38mΩ(typ.)@VGS=-10V -30V/-4.0A, RDS(ON)=60mΩ(typ.)@VGS=-4.5V Super high density cell design for extremely low RDS(ON) Exceptional on-resistance and maximum DC current capability Available in SOP8 Package This device is suitable for use as a load switch or in PWM and gate charge for most of the synchronous buck converter applications. The AM9435 is available in SOP8 Package APPLICATION Power Management in Note book Portable Equipment DSC LCD Display inverter Battery Pow [ ... ]
AM9435M8R PDF Datasheet Download
