The maximum input voltage that can be applied to the LD1086DT33 is 15V, although it's recommended to keep it below 12V for optimal performance and reliability.
To ensure stability, make sure to use a minimum output capacitance of 10uF with an ESR (Equivalent Series Resistance) of less than 1 ohm, and a minimum input capacitance of 1uF. Also, keep the input and output capacitors close to the regulator.
The dropout voltage of the LD1086DT33 is typically around 1.5V, which means the input voltage must be at least 1.5V higher than the output voltage for the regulator to function properly.
The LD1086DT33 is rated for operation up to 125°C, but its performance and reliability may degrade at high temperatures. It's recommended to derate the output current and input voltage at high temperatures to ensure reliable operation.
You can add a TVS (Transient Voltage Suppressor) diode or a zener diode in parallel with the input capacitor to protect the LD1086DT33 from input voltage surges or spikes.