The recommended PCB layout for the TDA8702T involves keeping the input and output tracks as short as possible, using a ground plane to reduce noise, and placing decoupling capacitors close to the device. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is recommended.
To ensure the TDA8702T is properly biased, make sure to connect the VCC pin to a stable voltage source, and the GND pin to a solid ground. The voltage on the VCC pin should be within the recommended operating range of 4.5V to 18V. Additionally, ensure that the input voltage on the VIN pin is within the recommended range of 1.5V to 12V.
The maximum output current of the TDA8702T is 1A. However, it's recommended to limit the output current to 500mA to ensure reliable operation and to prevent overheating.
To protect the TDA8702T from overvoltage and undervoltage conditions, use a voltage regulator or a voltage supervisor to ensure that the input voltage remains within the recommended operating range. Additionally, consider using a TVS diode or a zener diode to clamp the input voltage and prevent damage from voltage spikes or surges.
The thermal resistance of the TDA8702T is 45°C/W (junction-to-ambient) and 10°C/W (junction-to-case). This means that the device can dissipate up to 1.5W of power without exceeding the maximum junction temperature of 150°C.
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