Output Voltage (Survival, (Note 4)) −0.3V to +9V
Input-Output Voltage (Survival, (Note 5)) −0.3V to +16V

REVERSE INPUT-OUTPUT VOLTAGE
The PNP power transistor used as the pass element in the
LP2985 has an inherent diode connected between the regulator
output and input. During normal operation (where the
input voltage is higher than the output) this diode is reversebiased.
However, if the output is pulled above the input, this diode will
turn ON and current will flow into the regulator output. In such
cases, a parasitic SCR can latch which will allow a high current
to flow into VIN (and out the ground pin), which can
damage the part.
In any application where the output may be pulled above the
input, an external Schottky diode must be connected from
VIN to VOUT (cathode on VIN, anode on VOUT), to limit the reverse
voltage across the LP2985 to 0.3V (see Absolute Maximum
Ratings).