LTM4608IV#PBF datasheet by Linear Technology

LTM4608IV#PBF Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LTM4608?
  The maximum input voltage that can be applied to the LTM4608 is 28V, but it's recommended to keep it below 24V for optimal performance and reliability.
• How do I optimize the layout for the LTM4608?
  To optimize the layout for the LTM4608, keep the input and output capacitors close to the IC, use a solid ground plane, and minimize the length of the traces between the IC and the capacitors. Also, ensure that the thermal pad is connected to a solid ground plane to improve thermal performance.
• What is the recommended input capacitor value and type for the LTM4608?
  The recommended input capacitor value is 10uF to 22uF, and it's recommended to use a low-ESR ceramic capacitor, such as an X5R or X7R type, to minimize the equivalent series resistance and ensure stable operation.
• How do I select the output inductor for the LTM4608?
  To select the output inductor, consider the output voltage, output current, and switching frequency. A good starting point is to use an inductor with an inductance value between 1uH to 10uH, and a current rating that exceeds the maximum output current. Also, consider the inductor's DC resistance and core material to minimize losses.
• What is the thermal derating curve for the LTM4608?
  The thermal derating curve for the LTM4608 is not explicitly stated in the datasheet, but it's recommended to derate the output current by 1.5% per degree Celsius above 40°C to ensure reliable operation.