The DDR4 standard accepts voltages from 1.2V to 1.4V. The Ryzen 5 2600 officially supports DDR4, so it is compatible.
You probably won’t gain much by it, since the official specs for your CPU set its limit to 2933 MHz.
So if you’re asking this because you want to overclock your RAM as advertised on your Motherboard: don’t. The RAM modules are already 10% faster than your CPU can handle by default.
The X370 Motherboard has completely separate circuits for the RAM though. So no matter what you do, the worst-case is that you fry the RAM modules, the CPU is save.