LM2575HVT-12/LB03 datasheet by Texas Instruments

LM2575HVT-12/LB03 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LM2575HVT-12/LB03?
  The maximum input voltage is 60V, but it's recommended to keep it below 50V for reliable operation and to prevent damage to the internal components.
• How do I ensure the output voltage is stable and regulated?
  To ensure a stable output voltage, make sure to use a suitable output capacitor with a low ESR (Equivalent Series Resistance) and a minimum capacitance of 22uF. Also, ensure the input voltage is within the recommended range and the output current is within the maximum rating.
• What is the minimum input voltage required for the LM2575HVT-12/LB03 to operate?
  The minimum input voltage required is around 12V, but it's recommended to keep it above 14V for reliable operation and to prevent dropout.
• Can I use the LM2575HVT-12/LB03 in a high-temperature environment?
  The LM2575HVT-12/LB03 is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage as the temperature increases to prevent overheating and ensure reliable operation.
• How do I calculate the output voltage ripple of the LM2575HVT-12/LB03?
  The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESR) / (fsw * Cout), where Iout is the output current, ESR is the output capacitor's Equivalent Series Resistance, fsw is the switching frequency, and Cout is the output capacitance.