Torex provides a recommended PCB layout in their application note AN-104, which includes guidelines for component placement, thermal vias, and routing to minimize noise and ensure stable operation.
The XC9141B33DMR-G has a thermal pad on the bottom, which should be connected to a thermal plane on the PCB. Ensure good thermal conductivity by using thermal vias, and consider adding a heat sink or thermal interface material if necessary.
Torex recommends using a 10uF to 22uF ceramic capacitor with an X5R or X7R dielectric, placed as close as possible to the VIN pin to ensure stable input voltage and minimize noise.
The XC9141B33DMR-G is rated for operation up to 105°C, but derating may be necessary for extended operation at high temperatures. Consult the datasheet and application notes for guidance on thermal derating and reliability.
Follow proper PCB design and layout practices, such as separating analog and digital grounds, using shielding, and minimizing loop areas. Additionally, consider adding EMI filters or common-mode chokes to the input and output lines.
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