We are looking for a booster supply from 12V/24V to 60V-90V (variable) output.
We found LT1082 in the site.
Couple of queries regarding this regulator:
1. Does this support the variable range output (controlled by the feedback resistors) ?
2. Does this support maximum of 120mA or it can be varied according to the requirement by any means?
Can anyone please help me with the answer.
Thanks & Regards,
Question 1. Yes, Vout = 1.24V(1+Rtop/Rbot)
Question 2. For Vout of 90 and Vin of 15V, Yes 120mA is the maximum Iout since the switch current limit is almost reached at this condition
If you need to have large output current on your application I would suggest using a controller such as LTC1871X ,LTC3897 or LTC3777 to not be limited buy the internal switch current limit
Thanks for the inputs. Few doubts still:
1. Whether the voltage can be varied from 60 to 90V with this resistor combinations?
2. If the input voltage is 12V will the current remains same for the 90V output ? or its going go lower?
Question 1. Yes, voltage divider network on the feed back would still be able to set Vout from 60 -90V
Question 2. The max output current would go lower because of the higher current picks that would pass thru the switch at lower input voltage