LTC3770EUH#PBF datasheet by Linear Technology

LTC3770EUH#PBF Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LTC3770EUH?
  The maximum input voltage that can be applied to the LTC3770EUH is 60V, but it's recommended to keep it below 50V for reliable operation.
• How do I ensure the stability of the output voltage in a noisy environment?
  To ensure stability, use a low-ESR output capacitor (e.g., ceramic or polymer) and add a small ceramic capacitor (e.g., 10nF) in parallel with the output capacitor to filter out high-frequency noise.
• What is the recommended layout and placement for the LTC3770EUH to minimize EMI and noise?
  Keep the input and output capacitors close to the IC, use a solid ground plane, and keep the high-current paths short and wide. Also, avoid routing sensitive signals near the inductor and use a shielded inductor if possible.
• How do I calculate the inductor value and what are the recommended inductor characteristics?
  Use the formula L = (Vin * (1 - D)) / (f_sw * ΔI_L) to calculate the inductor value, where Vin is the input voltage, D is the duty cycle, f_sw is the switching frequency, and ΔI_L is the inductor ripple current. Recommended inductor characteristics include a low DCR (e.g., < 10mΩ), high saturation current, and a shielded or coupled inductor to reduce EMI.
• What is the maximum output current that can be delivered by the LTC3770EUH?
  The maximum output current that can be delivered by the LTC3770EUH is 2A, but it's recommended to derate the output current based on the ambient temperature and the input voltage to ensure reliable operation.