47 Watt 4 channel Audio Power Circuit Diagram


Overview:
TB2903HQ

The TB2903HQ is 4-ch BTL audio amplifier for car audio applications. This IC can generate higher power: POUT MAX = 47 W as it includes the pure complementary P-ch and N-ch DMOS output stage. It is designed to yield low distortion ratio for 4-ch BTL audio power amplifier, built-in standby function, muting function, and various kinds of protectors. Additionally, Off-set detector is built in. 
Features 
  • High power output 
  • POUT MAX (1) = 47 W (typ.) 
  • VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 Ω) 
  • Built-in standby switch function (pin 4) 
  • Built-in muting function (pin 22) 
  • Built-in Off-set detection function (pin 25) 
  • Thermal shut down, overvoltage, out to GND, out to VCC, out to out short 
  • Operating supply voltage: VCC (opr) = 9~18 V (RL = 4 Ω) 
Circuit Diagam:
47 Watt 4-channel Audio Power Circuit Diagram
47 Watt 4-channel Audio Power Circuit Diagram
Datasheet for  TB2903HQ: Download


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