Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
the circuit is taken from LT1170 datasheet (see attached image).
I use LTSpice IV for simulation, For D1 i use schottky diode with IF 3A, for D3 i use silicon diode with IF 3A.
simulation result for Vout= 0 volt, flat.
there is a mark on circuit (like resistor symbol with rectangle), i don't know what symbol is that so i ignore it on my circuit.
You can try to make a buck converter from many ICs, you can find even application circuits utilizing a linear voltage regulator. But a LT1170 is really bad suited for this purpose, I think, there are more pleasant ways to waste your time. Apart from this, the said Linear application should be hopefully operational somehow.
The "r" symbol sems to be a curious creation of Linear application engineers, designating a small resistor, possibly trace resistances. If you want to know more, file a support request to Linear! There may be a problem, if the author isn't working with Linear any more, cause it's a rather old application, copied from a more than 20 years old LT1070 datasheet.
P.S.: I see, that the shorted resistor symbol is used in some other schematics, too. So it may be considered well-known, the resistance value is mssing from the schematics anyway.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
