This part is a kind of semiconductor called BA5948FP.

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 :

BA5948FP Optical Discs 4-channel BTL driver for CD players BA5948FP BA5948FP is a 4-channel BTL driver for CD players. The adoption of HSOP28 package enables to make sets smaller. This IC incorporates thermal shutdown circuit and mute function with two mute pins. Gain can be controlled by external resistor in driver block. !Applications CD players !Features 1) 4-channel BTL driver 2) Set space saving by adoption of HSOP28 3) Built-in thermal shutdown circuit 4) Gain control by external resistor !External dimensions (Unit : mm) 18.5 ± 0.2 28 15 9.9 ± 0.3 7.5 ± 0.2 1 5.15 ± 0.1 14 2.2 ± 0.1 0.11 0.8 0.35 ± 0.1 0.08 M 16.0 ± 0.2 0.1 S HSOP28 !Absolute maximum ratings (Ta=25°C) Parameter Supply voltage Power dissipation Operating temperature range Storage temperature rang [ ... ]

BA5948FP PDF Datasheet Download