https://oshwlab.com/wagiminator/78xx-replacement https://hackaday.com/2022/09/05/the-7805-is-dead-long-live-the-7805/ I think the same. Though I would prefer a real 7805 any time, if possible. The 78xx series is so nice because of its simplicity, clean output (no RF noise or ripple; remember the caps and protective diode though) and robustness, not its efficiency. With a generously sized heatsink, it will run for decades without failure. Sure, the higher the input voltage, the higher the higher dissipation. But that’s how it works, it’s a linear regulator (in Germany, we also call it “Stabi”, from Stabilisator = stabilizer). It must compensate somehow, which causes thermal energy. But on the other hand, the 78xx will keep the output voltage stable no matter what. Remember, it can handle voltages up to 25-35v (7805, 7812 resp). So you technically could power you device with two car batteries at 13,8v each. Btw, the recommended input voltage should be at least ~2,5v above the rated ...