ST1S10 step down converter

[EmilFrid]

Fixing up a peavey fx16 mixer which had a bad ST1S10 synchronous step down converter. Problem is I cannot find any readily available online. Mouser Sweden were a candidate, but they won't have it available until late November.

I'm not too familiar with this kind of IC:s... does anyone know if there's a replacement for these? I've searched but to no avail.

 

[JohnRoberts]

That was after my time at Peavey, I ASSume you've asked their customer service.

It looks like that ST part is out of stock but there are other buck-boost convertors out there. They might not be drop in pin compatible.

JR

 

[EmilFrid]

That was after my time at Peavey, I ASSume you've asked their customer service.

It looks like that ST part is out of stock but there are other buck-boost convertors out there. They might not be drop in pin compatible.

JR

Thanks john. I will keep looking around. You don't think it's possible to use a linear regulator? I have a bunch of those. The buck converter is fed 12 volts dc from the main smps and all it's doing is converting those 12 volts to 3.3 volts. Smps and buck converters are kind of a blind spot to me... (obviously).

 

[moamps]

The local electronic parts store here has that chip, it costs about 4 euros, so if you want, I can buy it for you and send it to your address. It will cost you the price of the chip and the shipping costs, all together about 15 Euros, and you will probably receive it by the end of next week.

 

[JohnRoberts]

A linear pass regulator would likely require a heatsink and that will draw full current from the 12v rail. I used a LDO 3.3V pass regulator in my last version drum tuner, but as I recall that chip would not work from a 12V rail.

If moamps cen get you one, take the win...

JR

 

[EmilFrid]

The local electronic parts store here has that chip, it costs about 4 euros, so if you want, I can buy it for you and send it to your address. It will cost you the price of the chip and the shipping costs, all together about 15 Euros, and you will probably receive it by the end of next week.

That'd be great!