LM3900DR datasheet by Texas Instruments

LM3900DR Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LM3900DR?
  The maximum input voltage that can be applied to the LM3900DR is 40V, but it's recommended to keep it below 35V for reliable operation.
• How do I ensure the LM3900DR is stable and doesn't oscillate?
  To ensure stability, make sure to decouple the input and output with capacitors, use a minimum of 10uF capacitor at the input, and keep the output capacitor value between 10uF to 100uF.
• What is the minimum input voltage required for the LM3900DR to operate?
  The minimum input voltage required for the LM3900DR to operate is 7V, but it's recommended to keep it above 8V for reliable operation.
• Can I use the LM3900DR as a voltage regulator for a high-current application?
  While the LM3900DR can handle up to 1A of output current, it's not recommended for high-current applications due to thermal limitations. Consider using a more suitable voltage regulator for high-current applications.
• How do I protect the LM3900DR from input voltage transients?
  Use a voltage transient suppressor (TVS) diode or a zener diode at the input to protect the LM3900DR from voltage transients and spikes.