LM2576S-12 datasheet by Texas Instruments

LM2576S-12 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LM2576S-12?
  The maximum input voltage that can be applied to the LM2576S-12 is 40V, but it's recommended to keep it below 35V for reliable operation.
• How do I ensure the output voltage is stable and regulated?
  To ensure a stable output voltage, make sure to use the recommended output capacitor (10uF or greater) and keep the input voltage within the recommended range. Also, ensure the PCB layout is well-designed to minimize noise and EMI.
• What is the minimum input voltage required for the LM2576S-12 to operate?
  The minimum input voltage required for the LM2576S-12 to operate is 13V, but it's recommended to keep it above 15V for reliable operation.
• Can I use the LM2576S-12 in a high-temperature environment?
  The LM2576S-12 is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage at high temperatures to ensure reliable operation.
• How do I calculate the output voltage ripple of the LM2576S-12?
  The output voltage ripple of the LM2576S-12 can be calculated using the formula: ΔVout = (Iout x Rload) / (f x Cout), where Iout is the output current, Rload is the load resistance, f is the switching frequency, and Cout is the output capacitance.