3W Stereo Audio Amplifier Using TDA7266

Tiny stereo audio amplifier board has been designed around SMD TDA7266D IC from ST. The TDA7266D is a dual bridge amplifier specially designed for Portable Audio, for LCD TV/Monitor, PC Motherboard, and TV applications. This circuit provides high quality audio output of 3W approx.  on each channel with standard audio signal input.  The circuit works with 3.5V to 5V. Due to low supply input this amplifier suitable for small size audio gadgets and portable audio applications like MP3 player, Voice messaging system, Warning signals, Annunciator.

Key Features

  • SUPPLY VOLTAGE RANGE 3.5 to 5V (Maximum supply 5V due to small PCB and   small thermal Area)
  •  OUTPUT POWER 3+3W @THD = 10%, RL = 8Ω, VCC = 3.7V (3W Approx.)
  • SINGLE SUPPLY
  • MINIMUM EXTERNAL COMPONENTS NO SVR CAPACITOR NO BOOTSTRAP NO BOUCHEROT CELLS INTERNALLY FIXED GAIN
  • MUTE FUNCTIONS (Jumper Closer)
  • SHORT CIRCUIT PROTECTION
  • THERMAL OVERLOAD PROTECTION

Download Data Sheet TDA7266