The TB2902HQ is 4ch audio amplifier for car audio application.
This IC can generate high power, high quality sound output, POUTMAX = 41 W, using a pure complementary P-ch and N-ch DMOS output stage. The built-in self diagnosis function which is included can be controlled via I2C BUS.
In addition, stand-by and mute function, and various Protection feature are included.

FEATUREs
•  High power output
: POUTMAX (1) = 41 W (typ.)
(VCC =14.4 V, f = 1 kHz, JEITA max, RL= 4 Ω)
: POUTMAX (2) = 37 W (typ.)
(VCC =13.7 V, f =1 kHz, JEITA max, RL =4 Ω)
: POUTMAX (3) =70 W (typ.)
(VCC =14.4 V, f =1 kHz, JEITA max, RL =2 Ω)
: POUT(1) = 27 W (typ.)
(VCC =14.4 V, f =1 kHz, THD =10%, RL =4 Ω)
: POUT(2) = 23 W (typ.)
(VCC =13.2 V, f =1 kHz, THD =10%, RL =4 Ω)
: POUT(3) =45 W (typ.)
(VCC =14.4 V, f =1 kHz, THD =10%, RL =2 Ω)
•  Low distortion ratio: THD = 0.015% (typ.)
(VCC =13.2 V, f =1 kHz, POUT =5 W, RL =4 Ω)
•  Low noise:  VNO =90 µVrms (typ.)
(VCC =13.2 V, Rg =0 Ω, BW =20 Hz to 20 kHz, RL =4 Ω)
•  Built in stand by & mutingfunction: controlled via I2C Bus (pin 16)
•  Built in clipping detection (pin 4)
•  Built in I2C Bus for stand-by, mute, voltage gain control, self diagnosis: Output short detection, offset detection,tweeter or speaker open detection
•  Built-in various protection circuits
   Thermal shut down, over-voltage, out to GND, out to VCC, out to out short circuit
•  Operating supply voltage:  VCC (opr) =9 to 18 V (RL =4 Ω)
                                       VCC (opr) =9 to 16 V (RL =2 Ω)