LMP8640HVMKE-T/NOPB datasheet by Texas Instruments

LMP8640HVMKE-T/NOPB Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the LMP8640?
  A good PCB layout for the LMP8640 involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
• How do I ensure stability of the LMP8640 in my design?
  To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Also, ensure that the output capacitor has a low ESR and is properly sized for the output voltage and current. Additionally, a minimum of 10uF input capacitance is recommended.
• What is the maximum ambient temperature range for the LMP8640?
  The LMP8640 is rated for operation from -40°C to 125°C. However, the device may still function outside this range, but its performance and reliability may be affected.
• Can I use the LMP8640 in a high-reliability or automotive application?
  Yes, the LMP8640 is qualified for automotive and high-reliability applications. It meets the AEC-Q100 standard for automotive applications and is also suitable for industrial and medical applications.
• How do I calculate the power dissipation of the LMP8640?
  The power dissipation of the LMP8640 can be calculated using the formula: Pd = (Vin * Iin) + (Vout * Iout). Where Vin is the input voltage, Iin is the input current, Vout is the output voltage, and Iout is the output current.