Oli Glaser wrote:

> Hi all,
>=20
> I have a battery powered project (either 4xAA/AAA or 3.7V LiPo) which=20
> has quite a few supply voltages. They are +5, -5, +3.3, and +1.5 - all=20
> at above 200mA preferably.
> I have spent a night searching through all the major sites to find the=20
> cheapest solution, as price is an important factor.=20

Olin's method to use a cheap PIC as switcher controller works also.
Possibly with a bigger PIC so that you can control all four output
voltages with one device.=20

Gerhard
--=20
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