The maximum input voltage that can be applied to the LT1086CM is 15V, but it's recommended to keep it below 14V to ensure reliable operation and to prevent damage to the internal circuitry.
To ensure the stability of the output voltage, make sure to use a minimum output capacitance of 10uF with an ESR (Equivalent Series Resistance) of less than 5 ohms. Additionally, keep the input and output capacitors close to the regulator to minimize parasitic inductance and resistance.
The minimum input voltage required for the LT1086CM to regulate the output voltage is typically around 2.5V above the output voltage. For example, if the output voltage is 5V, the minimum input voltage should be at least 7.5V.
The LT1086CM 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.
To protect the LT1086CM from input voltage transients and spikes, use a TVS (Transient Voltage Suppressor) diode or a voltage clamp circuit at the input. This will help to limit the voltage spikes and prevent damage to the regulator.
LT1086CM datasheet
by Linear Technology
