I’m using these as drivers for “custom” exterior security lights using Cree XHP50 and XHP70 LED’s (way more current than you require.) They’re basically on every night (the XHP50’s) automatically at dusk and off at dawn and haven’t failed in about 5 years. I’m using a 13V source, but they’re rated up to 36V input. They don’t run hot so must be reasonably efficient.
I’ve been planning on making some work lights using them XHP50’s and 18V power tool batteries.