TB-2  -  Series DataSheet
TB2934HQ  -  Maximum Power 41 W BTL × 4-ch Audio Power IC  -  TOSHIBA Corporation  -  Audio Power Amplifier

The TB2934HQ is 4ch audio amplifier for car audio application.
This IC can generate high power, high quality sound output, POUT MAX = 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
: POUT MAX (1) = 41 W (typ.) (VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUT MAX (2) = 37 W (typ.) (VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUT MAX (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 = 180 μVrms (typ.) (VCC = 13.2 V, Rg = 0 Ω, BW = 20 Hz to 20 kHz, RL = 4 Ω)
• Built in stand by & muting function: 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 (pin 22 and 25)
• Built-in various protection circuits (Note 1, Note 2) 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)