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 thermal pad of the IC to the ground plane. This helps to dissipate heat efficiently.
To ensure the stability of the output voltage, it's essential to follow the recommended capacitor selection and placement guidelines in the datasheet. Additionally, using a low-ESR capacitor and placing it close to the IC can help to reduce noise and improve stability.
Although the datasheet specifies a maximum input voltage of 6.5V, it's recommended to limit the input voltage to 5.5V to ensure reliable operation and to prevent damage to the IC.
While the RD3L080SNTL1 is rated for operation up to 125°C, it's essential to consider the derating curves in the datasheet to ensure that the IC can handle the expected temperature range in your specific application.
The output voltage accuracy can be calculated by considering the tolerance of the internal voltage reference, the resistor tolerance, and the output voltage setting resistors. A detailed calculation is provided in the datasheet.
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RD3L080SNTL1 Overview
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