InsertTitle
Posts: 85
Joined: Sun Jul 16, 2017 3:43 pm

Struggling to find/build a 5v to 6V step-up regulator.

Thu Nov 23, 2017 10:22 pm

Trying to power to a LM386 for my audio setup however I want to power it using 6V using a 5V supply. I've seen online about 5v to 12v or 3V to 9V but just can't seem to find any circuits that match the criteria I'm searching for. Anyone able to show me simple circuit that I could use to achieve this conversion plus values of parts?

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Imperf3kt
Posts: 2647
Joined: Tue Jun 20, 2017 12:16 am
Location: Australia

Re: Struggling to find/build a 5v to 6V step-up regulator.

Fri Nov 24, 2017 1:06 am

I bought two of these recently
https://www.ebay.com.au/itm/322603250857

Am in the process of testing stability and suitability, but early testing looks promising.
55:55:44:44:4C
52:4C:52:42:41

drgeoff
Posts: 9743
Joined: Wed Jan 25, 2012 6:39 pm

Re: Struggling to find/build a 5v to 6V step-up regulator.

Fri Nov 24, 2017 5:15 pm

The LM386 works fine with a 5 volt supply. The maximum available output power before the onset of clipping will be slightly less than with a 6 volt supply.

InsertTitle
Posts: 85
Joined: Sun Jul 16, 2017 3:43 pm

Re: Struggling to find/build a 5v to 6V step-up regulator.

Fri Nov 24, 2017 5:22 pm

drgeoff wrote:
Fri Nov 24, 2017 5:15 pm
The LM386 works fine with a 5 volt supply. The maximum available output power before the onset of clipping will be slightly less than with a 6 volt supply.
Well I'm currently using the LM386 for driving a 3.5mm headphone jack and 8Ohm Speaker. Would the 5V be able output enough power for it to drive both?

sora03
Posts: 193
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Contact: Website

Re: Struggling to find/build a 5v to 6V step-up regulator.

Sat Nov 25, 2017 5:42 am

InsertTitle wrote:
Fri Nov 24, 2017 5:22 pm
drgeoff wrote:
Fri Nov 24, 2017 5:15 pm
The LM386 works fine with a 5 volt supply. The maximum available output power before the onset of clipping will be slightly less than with a 6 volt supply.
Well I'm currently using the LM386 for driving a 3.5mm headphone jack and 8Ohm Speaker. Would the 5V be able output enough power for it to drive both?
the datasheet of LM386 says: Wide Supply Voltage Range: 4 V–12 V or
5 V–18 V
FLOSS enthusiast, Debian user (linux-libre)

drgeoff
Posts: 9743
Joined: Wed Jan 25, 2012 6:39 pm

Re: Struggling to find/build a 5v to 6V step-up regulator.

Sat Nov 25, 2017 9:07 am

InsertTitle wrote:
Fri Nov 24, 2017 5:22 pm
drgeoff wrote:
Fri Nov 24, 2017 5:15 pm
The LM386 works fine with a 5 volt supply. The maximum available output power before the onset of clipping will be slightly less than with a 6 volt supply.
Well I'm currently using the LM386 for driving a 3.5mm headphone jack and 8Ohm Speaker. Would the 5V be able output enough power for it to drive both?
Yes

drgeoff
Posts: 9743
Joined: Wed Jan 25, 2012 6:39 pm

Re: Struggling to find/build a 5v to 6V step-up regulator.

Sat Nov 25, 2017 9:10 am

sora03 wrote:
Sat Nov 25, 2017 5:42 am
InsertTitle wrote:
Fri Nov 24, 2017 5:22 pm
drgeoff wrote:
Fri Nov 24, 2017 5:15 pm
The LM386 works fine with a 5 volt supply. The maximum available output power before the onset of clipping will be slightly less than with a 6 volt supply.
Well I'm currently using the LM386 for driving a 3.5mm headphone jack and 8Ohm Speaker. Would the 5V be able output enough power for it to drive both?
the datasheet of LM386 says: Wide Supply Voltage Range: 4 V–12 V or
5 V–18 V
There are two versions of the chip. Do not try to power the lower voltage version with more than 12 volts.

InsertTitle
Posts: 85
Joined: Sun Jul 16, 2017 3:43 pm

Re: Struggling to find/build a 5v to 6V step-up regulator.

Sat Nov 25, 2017 1:59 pm

drgeoff wrote:
Sat Nov 25, 2017 9:07 am
InsertTitle wrote:
Fri Nov 24, 2017 5:22 pm
drgeoff wrote:
Fri Nov 24, 2017 5:15 pm
The LM386 works fine with a 5 volt supply. The maximum available output power before the onset of clipping will be slightly less than with a 6 volt supply.
Well I'm currently using the LM386 for driving a 3.5mm headphone jack and 8Ohm Speaker. Would the 5V be able output enough power for it to drive both?
Yes
Okay perfect that's all I need to know.
You mention there's 2 versions of the chip what version would be the best to choose then? At current I'm using the LM386M-1 in my design as offered by eagle I'm assuming that's the version I require?

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