The minimum input voltage required for the LM317LIBP to operate is 3V above the output voltage. For example, if the output voltage is 5V, the minimum input voltage would be 8V.
The output voltage of the LM317LIBP can be adjusted by using a resistor divider network between the output and the adjust pin. The formula to calculate the output voltage is Vout = 1.25 x (1 + R2/R1), where R1 and R2 are the resistors in the divider network.
The maximum current that the LM317LIBP can supply is 1.5A. However, it's recommended to derate the current output based on the input voltage and ambient temperature to ensure reliable operation.
To protect the LM317LIBP from overheating, ensure that the device is mounted on a heat sink with a thermal resistance of less than 10°C/W. Also, keep the ambient temperature below 50°C and ensure good airflow around the device.
No, the LM317LIBP is a positive voltage regulator and cannot be used as a negative voltage regulator. For negative voltage regulation, a different device such as the LM337 is required.
LM317LIBP datasheet
by Texas Instruments
