Limecat
0
- Joined
- Dec 25, 2009
- Messages
- 140
- Points
- 0
^1.2A is within the LM317's limits. There's no reason to spend $15 when a $2 chip will suffice.
The lm338 would give off the same amount of heat as an lm317. Two lm317s in parallel would give off the same amount of heat as one lm317. If you use two lm317 in parallel, you only double the area the heat can be emitted while a heat sink can increase surface area 20 times or more. Adding a heat sink is simpler, more effective, and likely cheaper.
I would get the 338. Or even the 350
Because if it's worth doing, it's worth overdoing.