Docs:
http://ww1.microchip.com/downloads/en/DeviceDoc/25004A.pdf
http://ww1.microchip.com/downloads/en/AppNotes/01385A.pdf
https://ww1.microchip.com/downloads/en/Appnotes/01466B.pdf
http://www.farnell.com/datasheets/2129968.pdf

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Inductances

K = 0.22V/uH = Vo / L
L = Vo / K

$ octave -q
octave:1> K = 0.22;
octave:2> Vo = [ 2, 3.3, 5, 9, 10, 12, 15 ]
Vo =

    2.0000    3.3000    5.0000    9.0000   10.0000   12.0000   15.0000

octave:3> Vo/K
ans =

    9.0909   15.0000   22.7273   40.9091   45.4545   54.5455   68.1818

 Vo    L
 2.0   9
 3.3  15
 5    22.7
 9    41
10    45.5
12    54.5
15    68

///
Common output voltages.

$ ./Rtop.pl Rbot=10k Vref=0.8 2 3.3 5 9 10 12 15
 Rbot  =   10.000 kOhm
 Vref  =  800.000 mV  
    Rtop          Vout
  15.000 kOhm   2.000 V   
  31.250 kOhm   3.300 V   
  52.500 kOhm   5.000 V   
 102.500 kOhm   9.000 V   
 115.000 kOhm  10.000 V   
 140.000 kOhm  12.000 V   
 177.500 kOhm  15.000 V   

$ ./Rtop.pl Rbot=6.8k Vref=0.8 2 3.3 5 9 10 12 15
 Rbot  =    6.800 kOhm
 Vref  =  800.000 mV  
    Rtop          Vout
  10.200 kOhm   2.000 V   
  21.250 kOhm   3.300 V   
  35.700 kOhm   5.000 V   
  69.700 kOhm   9.000 V   
  78.200 kOhm  10.000 V   
  95.200 kOhm  12.000 V   
 120.700 kOhm  15.000 V   

///
Other things

The EN line needs 33kOhm or less to be pulled low.