I am looking for a darlington array IC like the ULN2803a that can sink up to 1.5A. It needs to be in a DIP. Any recommendations? Its needed because i am driving a stepper motor and requires 1.2A per coil. I am controlling the stepper motor from a PIC. So if you have another solution let me know.
If you're dead-set on DIPs, N/P-channel MOSFET arrays are fairly common, and they still put some of them into 8-DIP packages, e.g. the Alpha & Omega Semi AOP609 (or 605, 607, 610).
Dropping the thru-hole requirement, it might be cheapest for a low-volume application to just use 4 discrete transistors, plus you have (for better or worse) full control over the specs (aka, you get to figure out which of the millions of MOSFETs to use).
MOSFETs are superior to BJTs in switching applications, as they have no fixed voltage drop (Vce(sat)), just a relatively small Rds(on), which in low-voltage circuits, will provide much lower losses.