LP3990MF-3.3/NOPB datasheet by Texas Instruments

LP3990MF-3.3/NOPB Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LP3990MF-3.3/NOPB?
  The maximum input voltage that can be applied to the LP3990MF-3.3/NOPB is 15V. Exceeding this voltage may damage the device.
• How do I ensure the stability of the output voltage?
  To ensure the stability of the output voltage, it is recommended to use a minimum output capacitance of 10uF and a maximum ESR of 1 ohm. Additionally, the input capacitor should be at least 1uF with an ESR of 1 ohm or less.
• What is the minimum input voltage required for the LP3990MF-3.3/NOPB to operate?
  The minimum input voltage required for the LP3990MF-3.3/NOPB to operate is 2.7V. However, the device can operate down to 2.5V with reduced performance.
• Can I use the LP3990MF-3.3/NOPB in a high-temperature environment?
  The LP3990MF-3.3/NOPB is rated for operation up to 125°C. However, the device's performance may degrade at high temperatures, and the output voltage may drop. It is recommended to derate the output current at high temperatures.
• How do I calculate the power dissipation of the LP3990MF-3.3/NOPB?
  The power dissipation of the LP3990MF-3.3/NOPB can be calculated using the formula: Pd = (Vin - Vout) x Iout. Where Vin is the input voltage, Vout is the output voltage, and Iout is the output current.