There are, however, not employed in the IC very expensive, and usually the kind of lamp driven low priority ports. Used to drive port valve directly involved in vehicle function, relays, etc.
However, it is very expensive IC, generally, not been adopted in the lower port priority, such as a lamp drive. Valve directly related to vehicle functions, used to drive port such as a relay.
However, there are very expensive in IC can usually be used to drive the lamp with low priority port. The valve is directly related to the vehicle function is used to drive the relay port, and the like.