voltage regulator help - ot

[NavMicroSystems]

by the way ... Would you know a replacement part for the MAX 879 ( low power, low voltage Step up/ Step down ) ... ???

It was a jewel for my 4 cells to 5 v applications, but no more produced now ...

How about the MAX 710/711?

ok, it requires a little more space plus an external schottky, but it's efficiency is better.

[docwisdom]

From the specs I see its less than 1 amp rated.

[Acetronics2]

How about the MAX 710/711?

ok, it requires a little more space plus an external schottky, but it's efficiency is better.

Thanks Ralph,

The only failure in it is .... only SMD available !!! I'm looking for through hole components ... ( I sometimes use the copper side also... but do not like it too much ... )

I'll try to get some from Maxim's ...

Alain

[Acetronics2]

Hi,Doc

There's also a boost for LM 257x ... see attachment.

Alain

[Acetronics2]

How about the MAX 710/711?

ok, it requires a little more space plus an external schottky, but it's efficiency is better.

Hi,Ralph

I Found that ...: http://www.farnell.com/datasheets/5438.pdf

may be interesting for you ( adding just a Power P-MOSFET i.e. ... hé,hé !!!)

Regards

Alain

[docwisdom]

Any resources for better calculating an inductor/capacitor match for the 2676?

[NavMicroSystems]

may be interesting for you ( adding just a Power P-MOSFET i.e. ... hé,hé !!!)

Hi Alain,

thanks for the link, but at the first glance I can't see any benefit.
With my latest design I get really good results even at high loads.

I really don't want to spend yet another number of days finding inductors and capacitors to push a different Controller to the efficiency I have already reached with my current design.

You and I know:
it takes a little more than just adding a MOSFET...
and other simple things a datasheet tells you.

Let others pick up this topic and let's see what they come up with...