Hello there!
Please pardon yet another part info request, but this one has me stumped, foxed and badly badgered as well. I removed some promising looking 12-pin SIL devices mounted on a heatsink from a 10 yr old impact printer. I suspect they were solenoid drivers for the printhead and I was hoping to use them for motor control. They were made by Allegro and bear the number 44a507844-001. Although there are plenty offered for sale according to Google not one datasheet is to be found. Could anyone help, please?
Thanks,
margrove

 

They may be "house marked" UDN2962W's, which are dual solenoid/motor drivers with PWM current control.

You can find a datasheet for the UDN2962W here:
http://www.alldatasheet.com/datasheet-pdf/pdf/55067/ALLEGRO/UDN2962W.html

 

It looks as if you're right.
Thank you, SgtWookie!

 

Note that I wrote "may be" in my 1st reply. I'm not 100% certain, but I found more than one reference linking the two together. Test with caution.