L6984TR datasheet by STMicroelectronics

L6984TR Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the L6984TR can handle?
  The L6984TR can handle a maximum input voltage of 28V, but it's recommended to keep it below 24V for optimal performance and reliability.
• 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 your 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 regulator on and off. It's an active-high input, meaning that the regulator is enabled when the EN pin is high (typically connected to VIN or a logic signal). When the EN pin is low, the regulator is disabled, and the output voltage is disconnected from the input voltage.
• How do I ensure stability and prevent oscillations in my design?
  To ensure stability, follow the layout guidelines provided in the datasheet, keep the input and output capacitors close to the regulator, and use a low-ESR output capacitor. Additionally, make sure to decouple the input voltage with a capacitor and use a ferrite bead or a resistor in series with the input capacitor to prevent oscillations.
• What is the maximum output current that the L6984TR can deliver?
  The L6984TR can deliver up to 3A of output current, but the actual output current capability depends on the input voltage, output voltage, and ambient temperature. Be sure to check the datasheet for the output current derating curves.