This part is a kind of semiconductor called TEA2025B.

Function of this product has STEREO AUDIO AMPLIFIER.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

TEA2025B TEA2025D STEREO AUDIO AMPLIFIER DUAL OR BRIDGE CONNECTION MODES FEW EXTERNAL COMPONENTS SUPPLY VOLTAGE DOWN TO 3V HIGH CHANNEL SEPARATION VERY LOW SWITCH ON/OFF NOISE MAX GAIN OF 45dB WITH ADJUST EXTERNAL RESISTOR SOFT CLIPPING THERMAL PROTECTION 3V < VCC < 15V P = 2 • 1W, VCC = 6V, RL = 4Ω P = 2 • 2.3W, VCC = 9V, RL = 4Ω P = 2 • 0.1W, VCC = 3V, RL = 4Ω ABSOLUTE MAXIMUM RATINGS Symbol VS POWERDIP 12+2+2 SO20 (12+4+4) ORDERING NUMBERS: TEA2025B (PDIP) TEA2025D (SO) DESCRIPTION The TEA2025B/D is a monolithic integrated circuit in 12+2+2 Powerdip and 12+4+4 SO, intended for use as dual or bridge power audio amplifier portable radio cassette players. Parameter Supply Voltage Ouput Peak Current Junction Temperature Storage Temperature Test Conditions 15 Unit V IO TJ [ ... ]

TEA2025B PDF Datasheet Download