After a bit of advice as reading a datasheet on the DM631, this is a 16 channel constant current LED driver, datasheet can be found here http://www.siti.com.tw/product/spec/LED/DM631.pdf
Now the DM631 uses a supply of 3.3V to 5V and it states on the datasheet "DM631 is a 16-channel constant current sink LED driver"
The datasheet also states "Maximum output voltage: 17V"
Basically my application requires 12V being supplied to an RGB LED strip.
As I understand it the outputs on the DM631 (which are kind of inputs as they sink current) will be happy as long as the 17V maximum voltage and maximum current rating is not exceeded?