L78L08ABD13TR datasheet by STMicroelectronics

L78L08ABD13TR Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the L78L08ABD13TR?
  The maximum input voltage is 35V, but it's recommended to keep it below 30V for reliable operation.
• How do I ensure the L78L08ABD13TR is stable and doesn't oscillate?
  To ensure stability, use a minimum output capacitance of 2.2uF, and keep the input capacitance as close to the regulator as possible. Also, use a low-ESR capacitor for the output.
• What is the dropout voltage of the L78L08ABD13TR?
  The dropout voltage is typically around 1.5V, but it can be as high as 2.5V under certain conditions. This means the input voltage should be at least 1.5V higher than the output voltage for proper regulation.
• Can I use the L78L08ABD13TR in a high-temperature environment?
  The L78L08ABD13TR is rated for operation up to 125°C, but its performance may degrade at high temperatures. Be sure to derate the output current and consider using a heat sink if operating in a high-temperature environment.
• How do I protect the L78L08ABD13TR from input voltage surges?
  Use a TVS (transient voltage suppressor) diode or a varistor in parallel with the input to protect against voltage surges. You can also add a series resistor to limit the input current.