The maximum input voltage is 40V, but it's recommended to keep it below 30V for reliable operation.
The output voltage can be adjusted by connecting a resistor divider network between the output and the adjust pin. The ratio of the resistors determines the output voltage.
The minimum input voltage required is 7.5V, but it's recommended to keep it above 8V for reliable operation.
The LM2678T-ADJ/NOPB is rated for operation up to 125°C, but it's recommended to derate the output current at high temperatures to prevent overheating.
You can add a transient voltage suppressor (TVS) diode or a zener diode in parallel with the input capacitor to protect the regulator from input voltage surges.