The recommended PCB layout for the MAX1745AUB+ involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it is recommended to use a separate analog ground plane and to keep the digital and analog signals separate to minimize noise and interference.
The selection of input and output capacitors for the MAX1745AUB+ depends on the specific application requirements. In general, X5R or X7R ceramic capacitors with a capacitance value of 10uF to 22uF are recommended for the input and output capacitors. The capacitor voltage rating should be at least 2x the maximum input voltage, and the ESR (Equivalent Series Resistance) should be less than 1 ohm.
The MAX1745AUB+ can handle a maximum input voltage of 18V. However, it is recommended to operate the device within the specified input voltage range of 4.5V to 16V to ensure optimal performance and reliability.
The MAX1745AUB+ is rated for operation up to 125°C. However, the device's performance and reliability may degrade at high temperatures. It is recommended to derate the device's performance and to ensure proper thermal management to prevent overheating.
To troubleshoot issues with the MAX1745AUB+, start by checking the input voltage and current, output voltage and current, and the device's operating temperature. Verify that the device is properly connected and that the input and output capacitors are correctly selected and installed. Use an oscilloscope to check for noise and oscillations on the input and output lines. Consult the datasheet and application notes for more detailed troubleshooting guidance.
MAX1745AUB+ datasheet
by Maxim Integrated Products
