The TA8261AH is 4 ch BTL audio power amplifier for car audio application. This IC can generate more high power: POUT MAX = 40 W as it is included the pure complementary PNP and NPN transistor output stage.
It is designed low distortion ratio for 4 ch BTL audio power amplifier, built-in Stand-by Function, Muting Function, Clip detector, and diagnosis circuit. Additionally, the AUX. amplifier is built-in, it can make the beep signal etc. output to 2 channels (OUT1 and 4). It contains various kind of protectors for car audio use.

FEATUREs
High power
  : POUT MAX (1) = 40 W (typ.)
  (VCC = 14.4 V, f = 1 kHz, EIAJ max, RL = 4 Ω)
  : POUT MAX (2) = 37 W (typ.)
  (VCC = 13.7 V, f = 1 kHz, EIAJ max, RL = 4 Ω)
  : POUT (1) = 27 W (typ.)
  (VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
  : POUT (2) = 22 W (typ.)
  (VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
Built-in clip detector & diagnosis circuit. (pin 25)
Built-in AUX. amplifier from single input to 2 channels output (pin 16)
Low distortion ratio
  : THD = 0.02% (typ.)
  (VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 Ω)
Low noise
  : VNO = 0.10 mVrms (typ.)
  (VCC = 13.2 V, Rg = 0 Ω, GV = 26dB, BW = 20 Hz~20 kHz)
Built-in stand-by switch function (pin 2)
Built-in muting function (pin 24)
Built-in various protection circuit
  : Thermal shut down, over voltage, out to GND, out to VCC, out to out short
Operating supply voltage: VCC (opr) = 9~18 V