Forum Post: RE: LM3478 EVAL BOARD EXTERNAL NFET OVERHEATING

Thanks for the prompt reply.
WEBENCH recommended substituting a Vishay-Siliconix SIR812DP-T1-GE3 NFET for the FDS6690A but from the data sheets, it looks like the FDS6690A is a better choice. Maybe I'm missing something.
The Vinput range is from 8 to 15 Volts.
The ambient operating temperature will be from 5C to 35C.
 
Thanks,
Duncan Ashworth
http://www.floorbotics.com