LTC3609EWKG#PBF datasheet by Linear Technology

LTC3609EWKG#PBF Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LTC3609 can handle?
  The maximum input voltage that the LTC3609 can handle is 36V, but it's recommended to keep it below 34V for reliable operation.
• How do I optimize the inductor selection for the LTC3609?
  To optimize the inductor selection, consider the inductor's saturation current, DC resistance, and core material. A good starting point is to choose an inductor with a saturation current rating of at least 1.5 times the maximum output current, and a DC resistance of less than 100mΩ.
• What is the recommended PCB layout for the LTC3609?
  For optimal performance, keep the input and output capacitors close to the IC, and use a solid ground plane to reduce noise. Keep the high-current paths (e.g., from VIN to LX) short and wide, and avoid routing sensitive signals near the inductor.
• How do I ensure the LTC3609's thermal performance?
  To ensure good thermal performance, provide adequate heat sinking, such as a thermal pad or a heat sink, and ensure good airflow around the IC. Keep the IC away from other heat sources, and avoid blocking airflow with components or PCB features.
• What is the recommended input capacitor type for the LTC3609?
  A low-ESR ceramic capacitor (e.g., X5R or X7R) with a voltage rating of at least 2x the maximum input voltage is recommended. Avoid using electrolytic capacitors due to their high ESR and limited lifespan.