A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output traces short and away from each other to minimize noise and coupling.
Ensure good thermal conductivity by using a heat sink or thermal pad, and avoid blocking airflow around the device. Also, consider the thermal resistance of the PCB and surrounding components.
A 10uF to 22uF X7R or X5R ceramic capacitor is recommended for the input filter. The capacitor should be placed as close to the VIN pin as possible.
Use a output capacitor with a low ESR (Equivalent Series Resistance) and a high ripple current rating. Add a pi-filter or a LC-filter to further reduce the output ripple and noise.
The maximum allowed voltage drop across the input capacitor is 1V to ensure the device operates within the specified input voltage range.
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SI2302-TP Overview
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