LM2743: I need a DC-DC with external reference, can I keep the LM2743 in tracking mode during my use?

I need a DC-DC with external adjustable reference, but I didnot found the chips that meet my need. Then I found the LM2743 whose datasheet says that it do not use its internal 0.6V reference during the tracking mode. So I am expecting whether I can apply a DC-DC consist of LM2743 and keep the LM2743 in tracking mode all the time and adjust its Vout by my external reference voltage? Thanks