On Sat, 11 Feb 2012 11:22:38 -0700, Jim Thompson
wrote:

In the past I have designed boost converters in burst mode, with peak
current control, but never with a PWM-controlled loop.

Outputs: +5 @ 25mA, -5V @ 20mA

Can someone point me to a tutorial?

Thanks!

[Don't point me to an off-the-shelf part. This has to go into a
_custom_ chip... just a little thing... 1mm x 25mm :-]

...Jim Thompson

OK it is not in my proper range of expertise, but there has to be a reason
that the device is not 2.5 mm by 10 mm (or even more square). Can you
enlighten us?