A good PCB layout for optimal thermal performance would be to have a solid ground plane on the bottom layer, and to use thermal vias to connect the exposed pad to the ground plane. This helps to dissipate heat efficiently.
To ensure the stability of the output voltage, it's recommended to use a minimum of 10uF ceramic capacitor at the output, and to place it as close to the output pin as possible. Additionally, a 1uF ceramic capacitor at the input can help to filter out noise.
Although the datasheet specifies a maximum input voltage of 18V, it's recommended to limit the input voltage to 15V to ensure reliable operation and to prevent damage to the device.
The output voltage of the PAM8904JPR can be calculated using the formula: Vout = 0.8V x (1 + R1/R2), where R1 and R2 are the resistors used in the feedback network.
The maximum output current that the PAM8904JPR can deliver is 2A, but it's recommended to limit the output current to 1.5A to ensure reliable operation and to prevent overheating.
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PAM8904JPR Overview
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