I've used the Maxim MAX710 for years and it's a nice part. So far it's
always been available, and the price is OK, about $5 in small
quantities. But I'm always open for something better.

What I need is a regulator that gives me 5 volts out for 4 to 6 volts
in. Output current less than 300 mA. When it's off, output needs to be
off and input drain no more than a few tens of microamps.

The MAX710 has a boost regulator followed by a linear low dropout
regulator. For my purposes it has been more efficient and no more
expensive than a SEPIC converter when you consider the extra inductor or
clever transformer plus extra capacitor.

I'm open for two-chip ideas, too.

If anyone has found a good solution, "I'm all ears".

Thanks.

Bob


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