The maximum input voltage that can be applied to the LT1580CQ is 80V, but it's recommended to keep it below 60V for reliable operation.
To ensure stability in the LT1580CQ output voltage, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, avoid using ceramic capacitors with high ESL.
The maximum output current that the LT1580CQ can deliver is 1.5A, but it's recommended to keep it below 1A for reliable operation and to avoid overheating.
The output voltage of the LT1580CQ can be adjusted by using a resistive divider network between the output and the adjust pin. The output voltage can be calculated using the formula: Vout = 2.5V x (1 + R1/R2).
The adjust pin on the LT1580CQ is used to adjust the output voltage of the regulator. It can also be used to implement a soft-start function or to monitor the output voltage.