A good PCB layout for the MAX6817EUT-T involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces to reduce noise and EMI.
To ensure proper power-up and initialization, connect the EN pin to a logic-high signal, and ensure the input voltage (VIN) is within the recommended range (2.7V to 5.5V). Also, add a 10nF capacitor between the EN pin and GND to filter out noise.
The maximum output current of the MAX6817EUT-T is 150mA. To limit the output current, add a current-limiting resistor (RCL) between the output pin and the load, and calculate its value using the formula: RCL = (VIN - VOUT) / ILOAD.
Choose input capacitors with a value between 1uF to 10uF, and output capacitors with a value between 2.2uF to 22uF. Ensure the capacitors have a voltage rating higher than the input voltage, and a low ESR (Equivalent Series Resistance) to minimize losses.
The thermal shutdown temperature of the MAX6817EUT-T is 150°C. To prevent overheating, ensure good airflow around the IC, use a heat sink if necessary, and avoid operating the IC at maximum power for extended periods.