Default [Q] IC on the usb pcb

Hi, I couldn't find this using the search function so I opened this thread. I need to know the IC model and functions of that little 6 pin SMD IC on the microphone/usb module PCB. The little one at the bottom of the phone. Or anyone can point me in the right direction, thanks in advance.
Current Device:
Nexus 5 | Carbon ROM nightlies | ElementalX Kernel | PA Gapps | F2FS

Previous Devices:
Samsung Galaxy SII [DIY Screen Replacement Failure] | CM10.2 | Stock CM Kernel
Samsung Omnia II [SOLD] | Ported Android Froyo
Nokia 3310 [Survived Titanfall]