This part is a kind of semiconductor called BA5927S.

Function of this product has CD direction 6ch BTL driver.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

IC CD 6chBTL BA5927S BA5927S CD 3.3V 6chBTL 6chBTL 1ch 4ch !用途 CD !特長 1) 2) 3.3V 3) 4ch !絶対最大定格 (Ta=25°C) Parameter ∗1 Ta=25°C Symbol VCC Pd Topr Tstg 1°C 13.6mW Limits 13.5 1.7∗1 −35~+85 −55~+150 2ch Unit V W °C °C !推奨動作条件 (Ta=25°C) Parameter Symbol VCC Min. 4.5 Typ. Max. 8 13.2 Unit V BA5927S 2ch IC !ブロックダイアグラム BA5927S 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 BIAS x2 x2 DD MUTE BIAS VCC 150 D D D D −+ BIAS 13.3k 150 x3/8 x3/8 LEVEL SHIFT T.S.D −+ 13.3k LEVEL SHIFT LEVEL SHIFT LEVEL SHIFT LEVEL SHIFT +− 13.3k BIAS 13.3k +− DETECTION 150 OF REG-OUT CURRENT BIAS DD DD 150 VCC VCC 123456789 LEVEL SHIFT 10k x3/8 x3/8 −+ 10k D D x2 x2 10 11 12 13 14 15 16 T.S.D : The [ ... ]

BA5927S PDF Datasheet Download