The recommended operating voltage range for the TDA8444 is 8V to 18V, although it can operate up to 20V with reduced performance.
To ensure stability in the output stage, it's essential to use a minimum output capacitor of 100nF and a series resistor of 1kΩ to 10kΩ between the output and the load.
The maximum power dissipation of the TDA8444 is 2W, and it's essential to ensure proper heat sinking to prevent overheating.
Yes, the TDA8444 can be used as a headphone amplifier, but it's essential to consider the output power and impedance matching to ensure proper performance.
To protect the TDA8444 from overvoltage and ESD, use voltage clamping diodes and ESD protection devices, such as TVS diodes, and follow proper PCB layout and design guidelines.