Hi -- a few quick questions on the differences between LM3406HV & LM3404HV (minus the obvious 1.0A If vs. 1.5A If).
First off, why does the 3406 have a Vout pin & how does this function differently than the way that they 3404 is setup?
Second, I am a bit confused in setting & calculating the output current. In the LM3404HV datasheet examples, the current is recalculated using equations 34/36 (after selecting an Rsns resistor). In the LM3406HV, this step is not done -- the current is simply calculated as .2/Rsns. Is this due to the addition of the voltage output sense pin?
Third, in regards to the Rsns resistor. What if my actual return path to ground has some non-negligible value of resistance ('outside' of the PCB layout, say on wire to/from my regulated DC source). Is this going to affect the output voltage setting?
Lastly, I see that there is a LM3406HVQ1 model available -- how does this differ from the non-Q1 variant?
Thanks!