LX1970IDU - Microsemi Corporation

LX1970IDU Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for LX1970IDU to minimize EMI?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the LX1970IDU away from high-current carrying traces and ensure a low-impedance path for the output capacitors.
• How do I optimize the output filter design for LX1970IDU?
  Use a combination of ceramic and electrolytic capacitors to achieve a low-ESR output filter. Ensure the output filter is designed to handle the maximum output current and voltage ripple requirements.
• What is the recommended input capacitor selection for LX1970IDU?
  Choose an input capacitor with a low ESR and high ripple current rating. A 10uF to 22uF ceramic capacitor or a 22uF to 47uF electrolytic capacitor is recommended, depending on the input voltage and current requirements.
• How do I ensure reliable start-up and shutdown of LX1970IDU?
  Ensure a monotonic power-up and power-down sequence by using a soft-start circuit or a voltage supervisor. This prevents the LX1970IDU from oscillating or malfunctioning during power transitions.
• What are the thermal management considerations for LX1970IDU?
  Ensure good airflow around the LX1970IDU and use a heat sink if necessary. Keep the junction temperature below 125°C to ensure reliable operation and long-term reliability.