Just a brief service tweet announcement for today, no in-depth review of the thing – these super helpful, small and cheap “CA-1235” DC-DC buck converters, commonly available for 50 cents a pop (plus postage), do use a Monolithic Power MP1495 TSOT-23-8 control chip labelled “IACSE” – or a clone thereof. While that connection is not immediately obvious and not mentioned by MPS (it says chip labelling “ACS”), teh Googles knows about this and leads to a suitable datasheet. Some variants of the chip itself are not recommended for new designs, but of course there’s still a lot of stock and probably clones available out there, even Mouser lists a couple of original parts with hundreds of units available. […]