L6388E datasheet by STMicroelectronics

L6388E Frequently Asked Questions (FAQs)

• What is the maximum voltage that can be applied to the VIN pin?
  The maximum voltage that can be applied to the VIN pin is 40V, but it's recommended to keep it below 36V for reliable operation.
• How do I choose the right inductor value for my application?
  The inductor value depends on the output voltage, output current, and switching frequency. A good starting point is to use the inductor selection guide provided in the datasheet, and then fine-tune the value based on the specific application requirements.
• What is the purpose of the EN pin, and how do I use it?
  The EN (enable) pin is used to turn the converter on and off. It's an active-high input, meaning that the converter is enabled when the EN pin is high (above 2.5V) and disabled when it's low (below 0.8V).
• How do I set the output voltage of the L6388E?
  The output voltage is set using the FB (feedback) pin and an external resistor divider network. The FB pin is connected to the output voltage through a resistor divider, and the output voltage is adjusted by changing the ratio of the resistors.
• What is the maximum output current that the L6388E can deliver?
  The maximum output current that the L6388E can deliver depends on the input voltage and the output voltage. The datasheet provides a graph showing the maximum output current vs. input voltage for different output voltages.