LTC3649 datasheet circuit fails when powered with load

Hi, 

Trying to replicate LTC3649 circuit from datasheet p. 20.  When powering it with no load and with no commanded voltage on TRACK pin - crcuit starts ok, but when powering with load (220 ohm res for test) and  commanded 0.75V on TRACK pin - LTC3649 just burns down immediatelly.

Could anybody experienced look - what is wrong here? 

Circuit with used components attached

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