LM3409N/NOPB datasheet by Texas Instruments

LM3409N/NOPB Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LM3409N/NOPB can handle?
  The maximum input voltage that the LM3409N/NOPB can handle is 42V, but it's recommended to keep it below 40V for reliable operation.
• How do I ensure the stability of the output voltage?
  To ensure the stability of the output voltage, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, use a low-ESR capacitor for the input capacitor.
• What is the minimum input voltage required for the LM3409N/NOPB to operate?
  The minimum input voltage required for the LM3409N/NOPB to operate is 7V, but it's recommended to keep it above 8V for reliable operation.
• Can I use the LM3409N/NOPB in a high-temperature environment?
  Yes, the LM3409N/NOPB can operate in a high-temperature environment, but the junction temperature should not exceed 150°C. Also, the output current should be derated at high temperatures.
• How do I calculate the output voltage of the LM3409N/NOPB?
  The output voltage of the LM3409N/NOPB can be calculated using the formula: Vout = 1.24 x (1 + R1/R2), where R1 and R2 are the resistors used in the feedback network.