SNVSAC2A March 2015 – June 2020 LM317A
PRODUCTION DATA.
The input supply to the LM317A should be kept at a voltage level lower than the maximum input-to-output differential voltage of 40 V. When possible, the minimum dropout voltage should also be met with extra headroom to keep the LM317A in regulation. TI recommends the use of an input capacitor, especially when the input pin is located more than 6 inches away from the power supply source. For more information regarding capacitor selection, refer to External Capacitors.