LT581JH datasheet by Linear Technology

LT581JH Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LT581JH?
  The maximum input voltage that can be applied to the LT581JH is 80V, but it's recommended to keep it below 60V for optimal performance and reliability.
• How do I ensure the LT581JH is stable and doesn't oscillate?
  To ensure stability, make sure to follow the recommended layout and component selection guidelines in the datasheet, and add a 10nF to 100nF capacitor between the VIN and GND pins to filter out high-frequency noise.
• What is the minimum ESR required for the output capacitor?
  The minimum ESR required for the output capacitor is 0.1 ohms, but it's recommended to use a capacitor with an ESR of 0.01 ohms or less for optimal performance.
• Can I use the LT581JH in a high-temperature environment?
  The LT581JH is rated for operation up to 125°C, but it's recommended to derate the output current and voltage according to the temperature derating curve in the datasheet to ensure reliability.
• How do I calculate the output voltage ripple of the LT581JH?
  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 ESR, fsw is the switching frequency, and Cout is the output capacitance.