LM317D2T datasheet by STMicroelectronics

LM317D2T Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LM317D2T can handle?
  The maximum input voltage for the LM317D2T is 40V, but it's recommended to keep it below 35V for reliable operation.
• How do I adjust the output voltage of the LM317D2T?
  The output voltage of the LM317D2T 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 = 1.25 * (1 + R2/R1).
• What is the minimum load current required for the LM317D2T to operate properly?
  The LM317D2T requires a minimum load current of 3.5mA to maintain regulation. If the load current is less than this, the output voltage may not be regulated properly.
• Can I use the LM317D2T as a negative voltage regulator?
  No, the LM317D2T is designed to regulate positive voltages only. If you need a negative voltage regulator, you should use a different device, such as the LM337.
• How do I protect the LM317D2T from overheating?
  To protect the LM317D2T from overheating, ensure that the device is properly heat-sinked, and the input voltage is within the recommended range. You can also add a thermal shutdown circuit to turn off the device if it overheats.