LM2674LD-3.3/NOPB datasheet by Texas Instruments

LM2674LD-3.3/NOPB Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LM2674LD-3.3/NOPB?
  The maximum input voltage that can be applied to the LM2674LD-3.3/NOPB is 15V, but it's recommended to keep it below 12V for optimal performance and to prevent overheating.
• Can I use the LM2674LD-3.3/NOPB in a high-temperature environment?
  The LM2674LD-3.3/NOPB has a maximum operating junction temperature of 125°C, but it's recommended to keep it below 85°C for optimal performance and reliability. You may need to add thermal management or derate the output current in high-temperature environments.
• How do I calculate the output voltage ripple of the LM2674LD-3.3/NOPB?
  The output voltage ripple of the LM2674LD-3.3/NOPB can be calculated using the formula: ΔVout = (Iout * Rl) / (fsw * Cout), where Iout is the output current, Rl is the inductor resistance, fsw is the switching frequency, and Cout is the output capacitance.
• What is the minimum input capacitance required for the LM2674LD-3.3/NOPB?
  The minimum input capacitance required for the LM2674LD-3.3/NOPB is 10uF, but it's recommended to use a higher value (e.g., 22uF) to ensure stable operation and reduce input voltage ripple.
• Can I use the LM2674LD-3.3/NOPB in a synchronous rectification configuration?
  No, the LM2674LD-3.3/NOPB is an asynchronous buck converter and does not support synchronous rectification. It uses an internal diode for rectification, which can lead to higher losses and reduced efficiency.