The maximum input voltage that can be applied to the LM317LCDRE4 is 40V. However, it's recommended to keep the input voltage at least 3V higher than the output voltage to ensure proper regulation.
The output voltage of the LM317LCDRE4 can be adjusted by using a resistive divider network between the output and the adjust pin. The formula to calculate the output voltage is Vout = 1.25V * (1 + R2/R1), where R1 and R2 are the resistors in the divider network.
The LM317LCDRE4 requires a minimum load current of 3.5mA to regulate properly. If the load current is less than this, the output voltage may not be regulated accurately.
The LM317LCDRE4 is rated for a maximum output current of 1.5A. While it can handle high currents, it's not recommended to use it as a high-current regulator without proper heat sinking and thermal management. Excessive heat can reduce the lifespan of the device.
To protect the LM317LCDRE4 from input voltage transients, it's recommended to use a voltage clamp or a transient voltage suppressor (TVS) diode at the input. This will help prevent damage to the device from voltage spikes or surges.
LM317LCDRE4 datasheet
by Texas Instruments
