LM25066IAPSQ/NOPB datasheet by Texas Instruments

LM25066IAPSQ/NOPB Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  A good PCB layout for the LM25066IAPSQ/NOPB should include a solid ground plane, a separate power plane for the input voltage, and a heat sink attached to the exposed pad of the IC. The layout should also minimize the distance between the input capacitors and the IC.
• How do I choose the right input and output capacitors for this regulator?
  The input capacitor should have a voltage rating of at least 2x the input voltage, and a capacitance value of 10uF to 22uF. The output capacitor should have a voltage rating of at least 2x the output voltage, and a capacitance value of 10uF to 47uF. X5R or X7R ceramic capacitors are recommended.
• What is the maximum ambient temperature for this regulator?
  The maximum ambient temperature for the LM25066IAPSQ/NOPB is 85°C. However, the junction temperature should not exceed 150°C.
• Can I use this regulator in a high-reliability or automotive application?
  Yes, the LM25066IAPSQ/NOPB is qualified for automotive and high-reliability applications. It meets the requirements of the AEC-Q100 standard and is suitable for use in harsh environments.
• How do I ensure the regulator is stable and does not oscillate?
  To ensure stability, the input and output capacitors should be placed close to the IC, and the PCB layout should be designed to minimize parasitic inductance and capacitance. Additionally, the input voltage should be well-regulated and free of noise.