LT3090HDD#TRPBF datasheet by Linear Technology

LT3090HDD#TRPBF Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LT3090HDD?
  The maximum input voltage that can be applied to the LT3090HDD is 40V, but it's recommended to keep it below 36V for reliable operation.
• How do I ensure the LT3090HDD 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 capacitor between the VOUT and VIN 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 0.1Ω, but it's recommended to use a capacitor with an ESR of 0.05Ω or lower for optimal performance.
• Can I use the LT3090HDD in a high-temperature environment?
  Yes, the LT3090HDD is rated for operation up to 150°C, but the maximum junction temperature should not exceed 125°C for reliable operation. Make sure to follow the recommended thermal management guidelines in the datasheet.
• How do I calculate the output voltage ripple of the LT3090HDD?
  The output voltage ripple can be calculated using the formula: ΔVOUT = (IOUT x ESR) / (fSW x 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.