use Text::CSV_XS qw( );

my $csv = Text::CSV_XS->new({
   always_quote => 1,
});

while (...) {
   my %dataRow = ...;

   $csv->combine(@dataRow{qw( field1 field2 field3 field4 field5 )})
      or die;

   print OUTPUTFILE $csv->string()
      or die;
}