A good PCB layout for the MAX8686ETL+ involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces between the IC and the capacitors. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Additionally, ensure that the input and output capacitors are of high quality and have low ESR. It's also important to decouple the input and output with additional capacitors if necessary.
The MAX8686ETL+ can handle input voltages up to 32V, but it's recommended to keep the input voltage below 24V for optimal performance and reliability.
The MAX8686ETL+ is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage at high temperatures to ensure reliability. Additionally, ensure that the PCB and surrounding components are also rated for high-temperature operation.
To troubleshoot issues with the MAX8686ETL+, start by checking the input voltage, output voltage, and output current. Use an oscilloscope to check for oscillations or noise on the output. Also, check the PCB layout and component values to ensure they match the recommended values.
MAX8686ETL+ datasheet
by Maxim Integrated Products
