BOOST or BUCKBOOST

Hello ,

I was wondering if the meaning of BOOST or BUCK boost involve a greater voltage at the output of the charger than the voltage of the battery itsefl.

For my application , i have not a lot of volume to put many batteries.
I need an ouput voltage of 7 volt mini .
Using 2 series batteries is a solution but cost a lot of space.
I have to feed 2 LDO which produce regulated 5V and 3.3V 2A

Do you have a solution which can provide the following with on single LI-ION batterie:

Output voltage > 7V
Shipping mode