This part is a kind of semiconductor called ME4953.
Function of this product has Dual P-Channel 30V (D-S) MOSFET.
Manufacturers : Matsuki
Image and pinout :

Some of the text within the PDF file :
ME4953/ME4953-G Dual P-Channel 30V (D-S) MOSFET GENERAL DESCRIPTION The ME4953 is the Dual P-Channel logic enhancement mode power field effect transistors are produced using high cell density, DMOS trench technology. This high density process is especially tailored to minimize on-state resistance. These devices are particularly suited for low voltage application such as cellular phone and notebook computer power management and low in-line power loss are needed in a very small outline surface mount package. FEATURES ● RDS(ON)≦60mΩ@VGS=-10V ● RDS(ON)≦90mΩ@VGS=-4.5V ● Super high density cell design for extremely low RDS(ON) ● Exceptional on-resistance and maximum DC current capability APPLICATIONS ● Power Management in Note book ● Portable Equipment ● Battery Powered S [ ... ]
ME4953 PDF Datasheet Download
