Hi all,
Having found nothing during a cursory search, I come here to ask: does anybody have an integrated solution that they like that will do LiIon/LiPoly charging from USB, and provide a 3.3V buck output from either USB or battery on a single chip?
I am aware of the LTC3557/3559, but unfortunately those run afoul of the rather tight budget for this project (we're talking a few thousand units, so every dollar adds up). That's also why I'd rather not have a separate charger and separate buck (means twice the inductors, more passives, more cost). I don't need crazy high output current, either. Just running a small color display off a microcontroller and some other peripherals, no radios or anything fancier.
Thanks!