Separate DNA fragments with very different size (oligo and lambda-DNA)
A spin column might work for your purposes since you can do multiple rounds of binding if your volume is too large to bind in a single pass, but for DNA of that size a lot will be irreversibly stuck to the column.  See for example the protocol for the Monarch® PCR &amp; DNA Cleanup Kit. 

Consequently I would recommend just doing an ethanol precipitation, which favors recovery of longer DNA molecules (see for example this protocol).