LM5145RGYT datasheet by Texas Instruments

LM5145RGYT Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LM5145RGYT can handle?
  The LM5145RGYT can handle input voltages up to 60V, but it's recommended to keep it below 40V for optimal performance and reliability.
• How do I ensure the LM5145RGYT is stable and doesn't oscillate?
  To ensure stability, make sure to follow the recommended PCB layout guidelines, use a sufficient output capacitor, and add a small ceramic capacitor (e.g., 10nF) between the VIN and GND pins.
• What is the minimum input capacitance required for the LM5145RGYT?
  The minimum input capacitance required is 10uF, but it's recommended to use a larger capacitor (e.g., 22uF) to ensure stable operation and minimize input voltage ripple.
• Can I use the LM5145RGYT in a high-temperature environment?
  The LM5145RGYT is rated for operation up to 125°C, but it's recommended to derate the output current and voltage at higher temperatures to ensure reliability and prevent overheating.
• How do I calculate the output voltage of the LM5145RGYT?
  The output voltage of the LM5145RGYT can be calculated using the formula: VOUT = (R1 / R2) * (VIN - VREF), where R1 and R2 are the resistors in the feedback network, VIN is the input voltage, and VREF is the internal reference voltage (1.21V).