The UA78M05CDCYR can handle input voltages up to 35V, but it's recommended to keep the input voltage below 25V for optimal performance and to prevent overheating.
To ensure stability, make sure to use a minimum output capacitance of 10uF, and an input capacitance of at least 1uF. Also, keep the input and output capacitors close to the regulator to minimize inductance.
The dropout voltage of the UA78M05CDCYR is typically around 2V, which means the input voltage must be at least 2V higher than the output voltage to maintain regulation.
The UA78M05CDCYR is rated for operation up to 125°C, but its performance may degrade at high temperatures. Make sure to provide adequate heat sinking and consider derating the output current at high temperatures.
Use a transient voltage suppressor (TVS) or a zener diode in parallel with the input capacitor to protect the UA78M05CDCYR from input voltage surges and spikes.