Parallel L293D's

[Tarkin]

Hi all,
Does any know offhand if you can tie two L293D to parallel their
output
and double the peak output current (from 1.2A 2.4A)?

TIA,
Tarkin

[Will Pollock]

I currently have 2 SN754410's stacked which are pin compatible with the L293
chips. So I believe it should work.

-Will

TIA,
Tarkin

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[MikeD]

My analog electronics is rusty but I know that in general this method
will not work. I know that you need to increase wire gauge, not the
number of wires, to increase current through-put. I certainly cannot
make a bigger amplifier by stacking output transistors in parallel. If
the 293s were 'ideal' this would work but in reality one is going to
be a microsecond slower or have a milli-ohm more resistance than the
other one and an over-load can happen in a fraction of a second. Note
also that if you run a 293 at near peak it will need a really good
heat sink either with a radiator on top and or a large ground plain.