# Supply microcontroller and solenoid with the same battery at different voltage levels

I'm working with a microcontroller which its supply voltage range is 1.8V to 3.6V

I want to connect a solenoid to this mcu (this solenoid will be activated occasionally).

Current–voltage characteristic of the solenoid:

Input voltage: DC6V

Direct current: 0.35~0.476 A

So, my idea is to connect a 3.6V battery to the mcu and use a DC DC Converter to supply the solenoid.

But the problem is that I cannot find any 3.6V to 6V DC DC converter.

Any help would be really appreciated.

• There must be about a zillion boost converters that will operate from a single Li-on cell. Where all did you look so as not to find any? I think there's one stuck on the bottom of my shoe. Commented Apr 10, 2015 at 16:13
• I've contacted to Farnell, Digikey, etc with no luck. They don't have a 3.6V to 6V DC DC converter. Commented Apr 10, 2015 at 16:18
• First, you don't have to contact a distributor, you look for this on their web site. Second, nobody is going to make exactly a 3.6 V to 6 V boost converter because they wouldn't sell enough. Instead they make general boost converters and you set the output voltage with a resistor divider. Read a few datasheets. Commented Apr 10, 2015 at 19:47

FB = 12V $(\frac {R2}{R1+R2})$= 1.237V, so the nominal voltage at the output will be a bit higher than 12V (ignoring bias current, which at 40nA is pretty small).