If you have RS limited where you are (and if IL is Illinois then you do) they would be a ready albeit not the cheapest source. Rather than quote parts which may not suit - look in their catalog which they happily provide for free. Page 1-1084to 1-1092 is all on power control ics and their are over 50 smt types there - hopefully at least one will suit your need. Lessee - LT1076 7 lead DD pkg 2A, 45v max in - available all over )others have mentioned recently) Claims SMT - don't know DD pkg myself. LT have all data sheets and app notes on their site - www.linear.com/apps LT1377C - sounds ideal Boost, buck, flyback, forward, CUK, . 1 MHz, 1.5A 8 pin SOIC $12ish in 25's from RS so probably a few dollars from LT. I haven't looked at ccts for these so they may not totally fill your bill. From: Peter L. Peres > I am looking for a type or family of SMPSU controllers that can run a >transformer or transformer-less converter for low (battery < 18V) voltage. >Only control circuitry should be inside, no power at all. Duty cycle >limiting (<50% for transformers), slow turn on, and latching SCP would be >nice. > > Should be in 8 pin SMT SOIC or similar and be available in small >quantities (maybe 1 reel for start).