I'd like to drive three common anode 7.5v 10ma 7-segment displays using my arduino uno and a few 74HC595N shift registers. The problem is the uno only outputs 5v 40ma on the digital pins.
I am considering inverting the 5v-out to -5v using an ICL7660. The -5v could then be placed at the anodes for a 10v total drop.
I have a few questions before trying this out-
Would the ICL7660 sink enough current to drive all three 7-segments? Are there other drawbacks? Is there a better solution?