I would like tell me . Why LT1963A IN Pin voltage range is -20V- +20V?
Does this mean that IN pin be able to be supply +40V when GND pin is 0V?
I want to build 24V in 18V Out circuit, can I use LT1963A?
LT1963A absolute maximum input voltage is only ±20V. (-20V is only for reverse voltage protection)
Which means having a 24V input is NOT recommended.
If you want to create a design with a 24V input, you can check the part below (LT3081: Vin=±40V with an adjustable output voltage)
LT3081 datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/3081fc.pdf
Or if you want to search for other parts that can be used for your design, refer on the link below.
Just fill in the required fields that will satisfy your circuit design and available parts within your desired ratings will show at the results.
thanks for your replay.
I will change parts.