I designed the PCB in KiCad as a single board of 35 by 85 millimeters that holds both channels. The schematic is the recommended one from datasheet, drawn twice for two channels. The TDA2003 amplifier on homemade PCB without heatsink Using the datasheet as source of inspiration, I designed my own PCB for two TDA2003 circuits, to make a stereo amplifier. Although nowadays it is considered obsolete, there are plenty of electronic parts suppliers which have TDA2003 in stock. It was designed for car audio, that's why it is powered from single supply of about 12 V. Having these features, the TDA2003 proves to be a good option for small power amplifiers. It comes with integrated thermal limiting circuit. The maximum operating DC voltage is 18 V, however TDA2003 will not get damaged as long as supply voltage is less than 28 V. It will withstand a permanent short circuit on the output as long as supply voltage doesn't exceed 16 V. It is very easy to build a reliable circuit with it because it has short circuit protection. TDA2003 is an integrated audio amplifier circuit capable of providing up to 10 W into 2 ohms load and 6 W into 4 ohms load when powered at 14.4 V. Build a stereo audio amplifier with TDA2003.
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