ronv Well-Known Member Most Helpful Member Mar 29, 2013 #1 I have a spice model for the 317 but it is for the 800 ma. version. Does anyone have a version for the 1.5 amp one? Thanks
I have a spice model for the 317 but it is for the 800 ma. version. Does anyone have a version for the 1.5 amp one? Thanks
ericgibbs Well-Known Member Most Helpful Member Mar 30, 2013 #2 ronv said: I have a spice model for the 317 but it is for the 800 ma. version. Does anyone have a version for the 1.5 amp one? Thanks Click to expand... hi Ron, You can change the value of the Isense resistor, its R26 in the LM317.sub. Its present value is 0.1R , change it to 0.057R [ see the image], after changing save the sub [ dont have LTspice running at the time] Save a backup up of the LM317 sub before you change it. You could also make a symbol/sub for say a LM317T220 for future use , using the above method. E. Attachments AAesp02.gif 10.9 KB · Views: 485 AAesp03.gif 28.8 KB · Views: 481 Last edited: Mar 30, 2013
ronv said: I have a spice model for the 317 but it is for the 800 ma. version. Does anyone have a version for the 1.5 amp one? Thanks Click to expand... hi Ron, You can change the value of the Isense resistor, its R26 in the LM317.sub. Its present value is 0.1R , change it to 0.057R [ see the image], after changing save the sub [ dont have LTspice running at the time] Save a backup up of the LM317 sub before you change it. You could also make a symbol/sub for say a LM317T220 for future use , using the above method. E.
ronv Well-Known Member Most Helpful Member Mar 30, 2013 #3 Thanks Eric, Your getting really good! Works like a champ.