The LT1579CS8-3 is a dual input ,single output ,low dropout regualtor.It is designed to provide an uninterruptible output voltage from two independent input voltage sources on a priority basis.
The absolute maximum ratings of the
LT1579CS8-3 can be summarized as

1)power input pin voltage:±20V;(2)output pin reverse current:5mA;(3)ADJ pin voltage:2V,-0.6V;(4)ADJ Pin current:5mA;(5)control input pin voltage:6.5V,-0.6V;(6)control input pin current:5mA;(7)storage temperature range:-65℃ to 150℃;(8)operating junction temperature range:0℃ to 125℃;(9)lead temperature:300℃.