Yes, as the pin it not internally protected it is good practice to include a pull-up resistor.
ADM7155
Recommended for New Designs
The ADM7155 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 600 mA of load current. Output voltages from 1.2 V to...
Datasheet
ADM7155 on Analog.com