This part is a kind of semiconductor called AON6552.

Function of this product has N-Channel MOSFET.

Manufacturers : Alpha & Omega Semiconductors

Image and pinout :

Some of the text within the PDF file :

AON6552 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) 30V 30A < 5mΩ < 8.5mΩ Application • DC/DC Converters in Computing, Servers, and POL • Isolated DC/DC Converters in Telecom and Industrial 100% UIS Tested 100% Rg Tested DFN5X6 Top View Bottom View 1 2 3 4 Top View 8 7 6 5 D G S PIN1 Absolute Maximum Ratings TA=25°C unless otherwise noted Parameter Symbol Drain-Source Voltage VDS Gate-Source Voltage Continuous Drain CurrentG Pulsed Drain Current C Continuous Drain Current Avalanche Current VDS Spike Power Dissipation B Power [ ... ]

AON6552 PDF Datasheet Download