This part is a kind of semiconductor called FP6137A.
Function of this product has 3A/2A Bus Termination Regulator.
Manufacturers : Fiti
Image and pinout :

Some of the text within the PDF file :
fitipower integrated technology lnc. FP6137A/B 3A/2A Bus Termination Regulator Description The FP6137A/B linear regulator is designed to provide the transient peaks up to 3A/2A sourcing or sinking capability for DDR SDRAM bus termination application. The output voltage can track half of input power by two external voltage divider resistors. The FP6137A/B provides current limit in both sourcing/sinking mode and thermal shutdown function which protects the excessive heating due to high current and high junction temperature. The FP6137A are available in SOP-8 (exposed pad), TO-252-5 and TO-263-5 packages. The FP6137B are available in the SOP-8 (fused), SOP-8 (exposed pad) and TO-252-5 packages. Pin Assignments SO Package (SOP-8) (FP6137B) VIN GND REFEN VOUT 1 2 3 4 8 VCNTL 7 VCNT [ ... ]
FP6137A PDF Datasheet Download
