This part is a kind of semiconductor called TPF605.

Function of this product has Audio Line Driver.

Manufacturers : 3Peak

Image and pinout :

Some of the text within the PDF file :

TPF603 / TPF605 / TPF607 Features 3-VRMS Audio Line Driver with Integrated Charge Pump Description  3-VRMS Output into 2.5kΩ Load with 5V Supply  2-VRMS Output into 2.5kΩ Load with 3.3V Supply  Integrated Charge Pump Generates Negative Supply Rail  0-V DC Voltage at Output  Low Noise: VN = 4.3μVRMS at 20Hz to 20kHz  Low THD+N: 0.001%  Drives 600Ω Load  Stable with 220pF Capacitive Load  Pop-Free Under-Voltage Protection (TPF603/605)  Pop-Free Enable Control  –40°C to 85°C Operation Range  Robust 8kV (Output-Pin) HBM ESD Rating  Robust 2kV CDM ESD Rating  Green, Popular Type Package Applications The 3PEAK INCORPORATED TPF603/605/607 are 3-VRMS pop-free stereo line drivers with the integrated charge pump generating the negative s [ ... ]

TPF605 PDF Datasheet Download