This part is a kind of semiconductor called BA6398FP.

Function of this product has 4-channel BTL driver for CD players.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

Optical disc ICs 4-channel BTL driver for CD players BA6398FP The BA6398FP is a 4-channel BTL driver for CD player motors and actuators. This IC has an internal 5V regulator, and is suited to a wide range of applications. FApplications CD players and CD-ROM drives FFeatures 1) 28-pin HSOP package allows for miniaturization of applications. 2) Low number of external components. 3) Driver gain is adjustable with a single attached resistor. FAbsolute maximum ratings (Ta = 25_C) 4) Internal 5V regulator. (requires attached PNP transistor) 5) Internal standard operational amplifier. 6) Internal thermal shutdown circuit. FRecommended operating conditions (Ta = 25_C) 340 Optical disc ICs FBlock diagram BA6398FP 341 Optical disc ICs FPin descriptions BA6398FP 342 Optical disc ICs FInp [ ... ]

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