This part is a kind of semiconductor called AON6514.
Function of this product has 30V N-Channel AlphaMOS.
Manufacturers : Alpha & Omega Semiconductors
Image and pinout :

Some of the text within the PDF file :
AON6514 30V N-Channel AlphaMOS General Description • Latest Trench Power AlphaMOS (αMOS LV) technology • Very Low RDS(on) at 4.5VGS • Low Gate Charge • High Current Capability • RoHS and Halogen-Free Compliant Product Summary VDS ID (at VGS=10V) RDS(ON) (at VGS=10V) RDS(ON) (at VGS = 4.5V) Application • DC/DC Converters in Computing, Servers, and POL • Isolated DC/DC Converters in Telecom and Industrial 100% UIS Tested 100% Rg Tested 30V 30A < 5mΩ < 8.5mΩ Top View DFN5X6 Bottom View PIN1 Top View 18 27 36 45 G Absolute Maximum Ratings TA=25°C unless otherwise noted Parameter Symbol Drain-Source Voltage VDS Gate-Source Voltage VGS Continuous Drain CurrentG TC=25°C TC=100°C ID Pulsed Drain Current C IDM Continuous Drain TA=25°C Current TA=70° [ ... ]
AON6514 PDF Datasheet Download
