A good PCB layout for the MAX1485EUB+T involves keeping the high-frequency traces short and away from the analog circuitry. Use a solid ground plane and keep the power and ground traces separate. Also, use a common-mode choke or ferrite bead to filter the input power lines.
To ensure proper decoupling, place a 10uF ceramic capacitor between the VIN pin and the GND pin, and a 100nF ceramic capacitor between the VCC pin and the GND pin. Additionally, use a 1uF ceramic capacitor between the BYP pin and the GND pin.
The MAX1485EUB+T can handle input voltages up to 18V, but it's recommended to keep the input voltage below 15V to ensure reliable operation and to prevent overheating.
To configure the MAX1485EUB+T for a specific output voltage, use the FB pin to set the output voltage. Connect a resistive divider from the output voltage to the FB pin, and adjust the resistor values to achieve the desired output voltage.
The MAX1485EUB+T can deliver up to 1A of output current, but it's recommended to keep the output current below 800mA to ensure reliable operation and to prevent overheating.