The recommended layout and placement for the MAX8663ETL+ 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's recommended to place the device near the power source and to use a low-ESR capacitor for the output filter.
To optimize the performance of the MAX8663ETL+, you should consider factors such as the input voltage range, output voltage, and load current. You should also ensure that the device is operated within its recommended operating conditions, and that the input and output capacitors are selected based on the specific requirements of your application.
The MAX8663ETL+ has a thermal shutdown feature that protects the device from overheating. However, it's still important to ensure that the device is operated within its recommended operating temperature range and that adequate heat sinking is provided. You should also consider the thermal resistance of the PCB and the ambient temperature of the environment.
To troubleshoot issues with the MAX8663ETL+, you should start by checking the input voltage, output voltage, and load current. You should also verify that the device is properly connected and that the input and output capacitors are correctly selected. Additionally, you can use a scope to check the output voltage ripple and the input voltage noise.
The MAX8663ETL+ is designed to minimize EMI, but it's still important to consider EMI in your design. You should ensure that the device is properly shielded, and that the input and output traces are routed away from sensitive circuits. You should also consider using EMI filters or shielding on the input and output lines.