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MC34063A: Problem selecting Rsense for te MC34603 in Boost configuration

Part Number: MC34063A

Hi, I'm, trying to test this IC:

These are my values:

Vin=24v

Vout=35.5

Max Iout=3A

Ipk=9.15A

Rsc=0.033 Ohm

Well with this configuration the voltage on Vout fall to 6 volts and current increases to 5A without any charge.

If I change Rsense to a 0.150 Ohm I can test  that it works correctly with a load of 30 Ohms, tension goes to 35.5v and I have less than 3A of consuption.

What I am doing wrong with selecting Rsense ?    

I did 0.3/9.15 to choose Rsense, of course I am using an external mosfet configuration