put OP6800 to sleep

I have been trying to get the OP6800 (2000 based) device to go to the
lowest power consumption mode possible. I need the device to shut off
programatically but since that’s not possible, just reduce power use to
the max and loop until someone resets device power is fine. The sleep
mode functions I’ve tried only reduce power to about 18 ma… but I read
much lower values in other sleepy mode threads. Any suggestions…
Thanks