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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Trying to souce an L4963 in UK
I am trying to source an L4963 ( no suffix) switching regulator chip to repair
a home control PC board. Unfortunately everyone I have been able to track down as having these will only sell in 100's or has a minimum order value of 50 quid or more! I only want one and they are about a fiver. :-( TIA -- Regards Dave Saville NB Remove no-spam- for good email address |
#2
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Hmmm are you looking at the surface mount (SO20) version or the "powerdip"
version? The datasheet for the original part is he http://www.st.com/stonline/products/...1358/l4963.pdf The packaging determines which suffix applies ... these ALWAYS have a suffix though it may not be printed on the chip. I don't have any, but I think you could probably sub the whole thing with an L296P (available from Maplin at about a fiver) which will cover 5-40V up to 4A, though you'd have to rig up a daughter board and wire that to the original circuit and substitute a few components to get the right O/P voltage. Datasheet for L296P is he http://www.st.com/stonline/products/...re/ds/1333.pdf Their site also has application notes to DL. You might also be able to use the L4962 which RS Components stock and will sell in units of 1 at £2.65 plus the vodka and tonic (yes this too has a different pinout, and fewer pins than the 4963). Dave "Dave Saville" wrote in message . uk... I am trying to source an L4963 ( no suffix) switching regulator chip to repair a home control PC board. Unfortunately everyone I have been able to track down as having these will only sell in 100's or has a minimum order value of 50 quid or more! I only want one and they are about a fiver. :-( TIA -- Regards Dave Saville NB Remove no-spam- for good email address |
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