What is the difference between the LT8640S & LT8640S-2 ?
Which products are newer?
Please make sure that you mounted the right IC . LT8640S doesn’t need adding BST cap and INTVcc cap because it has internal caps, while LT8640S-2 does require external BST cap and INTVcc cap. LT8640S and LT8640S-2 have the same package, but…
Please type into "Part #" column. I can see that both LT8640 and LT8640S are already there.
Our customer will use LT8302 fly back and LT8640S.
(24V-> 5.5V by LT8302 and 5.5V-Vf-> 3.3V about 4A by LT8640S.
(Refer to attached slide 1)
He simulated this design by LTspice.
(Result is attached slide 2)
When LT8302 SW current reaches…
I've designed a board with the LT8640.
The switcher is not working and the IntVcc pin is stuck at 2V instead of the specced >3V.
The input voltages are ok and the switching terminal is silent and doesn't do anything.
Where could I start…
Hello, can you confirm that PCB file for LT8640 works? Because I cannot run it with Altium Designer. I need this file for my thesis project. I would be happy if you can help me on it.
I'm doing reliability analysis (according to Telcordia SR332 Issue 3 method).
Fit/MTBF values given by Analog here follow another standard and are not comparable to Telcordia values.
I need MTBF/FIT value (according to Telcordia) for this…
I don't get 1 μF of bypass capacitor.Therefore I think we'll set a bypass capacitor of VIN1,2 to 2.2 μF.Would there be an anxious point?
Can I have advice?
I am trying to simulate the LT8640S briefly losing power on its input and then recovering. I'm using a voltage divider to supply the EN/UV pin.
The LT8640S turns on with the initial application of power (24V), but when the input power goes to 0V…
I´m trying to dynamically adjust the LT8640S output voltage with an external control voltage (let´s say from a DAC).
Could this be done using the TR/SS pin?
The LT8640S output voltage refers to its resistor devider:
Vout = 0,97V …