How do I create a 5 second soft-start with an LM334Z current regulator? Answered

Hey all,

A bit of a newbie to creating circuits

I have a 12V battery regulated to 2mA with an LM334Z current regulator.
Here are the docs for the current regulator: http://www.ti.com/lit/ds/symlink/lm134.pdf

I would like to create a soft start, so that when I turn the device on there is not a rush of current. 

I’d like it to ramp up over 5 seconds.

I’ve breadboarded a few schematics I found online but I can’t get them working. Even if the battery power is slowly ramped up, the LM334 rams the voltage to get the current at exactly 2mA. (my Rset w/ a 33ohm resistor)

Here’s a couple I’ve tried unsuccessfully.
http://dl.dropbox.com/u/5822/softstart1.gif (might be b/c the 317 is different?)

I even tried this schematic to no avail:
http://dl.dropbox.com/u/5822/Screen%20Shot%202012-04-29%20at%209.16.57%20AM.png

But I was using different transistors, didn’t think that mattered- let me know if it does

Can anyone help me figure this out? I’ve been stumped for days. Starting to pull my hair out :)

Thanks
Nick