LM5000-3MTCX/NOPB datasheet by Texas Instruments

LM5000-3MTCX/NOPB Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  A 4-layer PCB with a solid ground plane and thermal vias is recommended. The thermal pad should be connected to a large copper area on the PCB to dissipate heat efficiently.
• How do I ensure reliable start-up of the device?
  Ensure that the input voltage rises monotonically and does not droop during start-up. A soft-start circuit can be used to limit the inrush current and ensure reliable start-up.
• What is the maximum allowed voltage on the EN pin?
  The maximum allowed voltage on the EN pin is 6V. Exceeding this voltage may damage the device.
• Can I use the LM5000-3MTCX/NOPB in a high-temperature environment?
  Yes, the device is rated for operation up to 150°C. However, the maximum junction temperature (TJ) should not exceed 150°C to ensure reliable operation.
• How do I calculate the output voltage ripple?
  The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency.