On Oct 16, 9:33*pm, Jamie
t wrote:
wrote:
Hi,

Can anyone help identify a Toshiba IC used for bidirectional control
of a brushed motor? *The original part number is partially missing as
the chip has a crater blown in the package when the mechanism
seized...

12-pin staggered SIL package, with metal heatsink tab
Legend says TOSHIBA, part number begins TA80

The IC is part of the controller for the power antenna in a 1998 Mazda
323F (known as a Miata in North America I believe). *Toshiba don't
list anything similar in their current line-up, so I'm assuming the IC
is EOL and I'm looking at obsolete parts suppliers.

If anyone can identify this chip and, better still, point me to a
datasheet, I might be able to find a similar part or lash something up
using discretes if I can't locate a replacement.

TIA

R.

Does this help?

http://pdf1.alldatasheet.com/datashe...OSHIBA/TA8051P...

YOu can use a dual channel power amp IC, found in basic medium power
stereos for this. Or just fab a bridge from some power fets.

Jamie

Excellent, thanks very much for that. I'll trace the circuit tomorrow
and check the pin functions match. Agreed, lots of other bridge chips
will do as a substitute but I'll try a few of the local obsolete
component specialists first.

Cheers

R.