*Would using a voltage divider on the outputs affect the drivers operation?*

The Driver is a 24 channel current sink IC that will be used for automotive interior lighting.

LED will have a Vf of 3.3v @ 20 mA.
Using 12v supply to calculate power dissapation from the data sheet formula 
give a total of 5170 odd mWs which is larger then the IC can sink.

Tried to post the equaation but it gets messed up.

The whole application will have aprox 120 RGB LED but would like to avoid using a seperate 5v supply for the LEDs

[TLC5947 data sheet](http://www.ti.com/lit/ds/symlink/tlc5947.pdf)

TLC5947 Output circuit diagram:

![enter image description here](https://i.stack.imgur.com/sivqu.jpg)