Ok now time to find out how to get it to control the fan speed..
I'm looking at the typical 12V circuit in the datasheet, I'm not using VSLP or VT2, OTF VSLP is grounded to ground, here is where I'm a little confused So T1 is between R1 & R2 the other end goes to ground?
To me it seems like one leg of T1 goes to the supply and the other between R1 and R2 in which that wire is connected to VT1