L6985FTR datasheet by STMicroelectronics

L6985FTR Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the L6985FTR?
  The maximum input voltage that can be applied to the L6985FTR is 28V, but it's recommended to keep it below 24V for reliable operation.
• How do I ensure the L6985FTR is stable and doesn't oscillate?
  To ensure stability, make sure to follow the layout guidelines in the datasheet, use a sufficient output capacitor (at least 10uF), and add a 1nF capacitor between the VIN and EN pins.
• Can I use the L6985FTR in a high-temperature environment?
  The L6985FTR is rated for operation up to 150°C, but it's recommended to derate the output current and input voltage as temperature increases to ensure reliable operation.
• How do I calculate the output voltage of the L6985FTR?
  The output voltage of the L6985FTR can be calculated using the formula: VOUT = 0.8V x (1 + R2/R1), where R1 and R2 are the resistors connected to the FB pin.
• What is the minimum input voltage required for the L6985FTR to operate?
  The minimum input voltage required for the L6985FTR to operate is 6.5V, but it's recommended to keep it above 7V for reliable startup.