Multi MOSFET IC for Controlling 12V LED strips with Arduino
Assuming you can get by with a common Source connection (typical for an LED driver), you might be able to use the SLA5085 which is 5 MOSFET N-channel array:



with the following specs:

Vds: 60v

Id: 3A typical, max 10A

Vgs: 3v @ Id = 3A

It is available from Digi-Key.