A good PCB layout for the MAX1745EUB+ involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces connecting the IC to the capacitors and resistors. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure the stability of the output voltage, it is essential to choose the correct output capacitor value and type. A minimum capacitance of 10uF with an ESR of 1ohm or less is recommended. Additionally, the output capacitor should be placed close to the IC, and the feedback resistors should be kept as short as possible.
The MAX1745EUB+ can handle a maximum input voltage of 28V. However, it is recommended to keep the input voltage below 24V to ensure reliable operation and to prevent damage to the IC.
The MAX1745EUB+ is rated for operation up to 125°C. However, the IC's performance and reliability may degrade at high temperatures. It is recommended to derate the IC's performance and to ensure proper thermal management to prevent overheating.
To troubleshoot issues with the MAX1745EUB+, start by checking the input voltage, output voltage, and current. Verify that the input and output capacitors are properly connected and that the feedback resistors are correctly configured. Use an oscilloscope to check for oscillations or noise on the output. Consult the datasheet and application notes for more detailed troubleshooting guidance.
MAX1745EUB+ datasheet
by Maxim Integrated Products
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