high-current shift register

All of the high-current (>=100mA) shift registers I can find only sink current. I want one that sources current. Any ideas?

Relay, transistor, high current driver IC.

Low cost constant current source. One of the schematics has either digital or PWM input.

http://www.instructables.com/id/Circuits-for-using-High-Power-LED-s/

That’s an interesting idea, but I would need to build eight of them. I was hoping for something I could just hook up to my arduino without a ton of extra hardware.

Have a look at chips like the AMIS-39101-D or a FET switch like the BTS 410 or maybe just some P-ch FETs.

Also google "high side driver".


Rob

Thanks, "high side driver" was exactly what I needed. I can just buy mic2981s and use them with the 74hc595s I bought a while ago.