Shown in this slide is the efficiency for the LMZ36002 at 48 V and 24 V inputs. It can be seen in this image that the efficiency from 24 V input to 5 V is about 89% at 2 A. The efficiency from 48 V input to 5 V output is 85% at 2 A. The LMZ36002 has an automatic pulse frequency mode for light load efficiency. Also there is only 2.5 and 1.5 W dissipated at 48 and 24 V input down to 7.5 V output respectively at 2 A. Low power dissipation and high efficiency equals low contribution to system temperature rise.