Looking for info on available drop-in switchmode replacments for the 7805T
regulator, for a 250mA-sized load. Have located the RECOM series, but I'm
wondering who else does this type of device.
Tnx for all leads.
Wow, some of those devices have footprints like elephants!
The application is a batch rework of an existing product which uses a 7805T so
there simply isn't the wad of room around it for any of these 1" wide jobs, nor
the headroom for tall ones.
Unfortunately the orig design was poor both thermally and physically. The
un-sunk 7805T runs way too hot (although it doesn't go into shutdown). It is
placed away from the pcb edge and among other components. The board is in a
plastic case so a heatsink connected to the case - apart from not being possible
- wouldn't do anything, and a clip-on sink isn't going to help, as it is still
going to dissipate the same energy into the same confined airspace.
The rework solution has to get the heat dissipation down. Switcher.
The RECOM product I located
(
http://www.recom-international.com/switching_regulator_R-78xx.html)
will just fit in the available space, but before committing to that I was
hunting for others of a similar size which may have had better
price/availability.
Thanks guys for your input.
P.S. The designer HAS been *told*.