L78M09ABV datasheet by STMicroelectronics

L78M09ABV Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the L78M09ABV?
  The maximum input voltage that can be applied to the L78M09ABV is 35V, although it's recommended to keep it below 25V for optimal performance and reliability.
• How do I ensure the L78M09ABV is stable and doesn't oscillate?
  To ensure stability, make sure to use a minimum output capacitance of 2.2uF with an ESR (Equivalent Series Resistance) of less than 1 ohm, and keep the input capacitance as close to the regulator as possible.
• What is the minimum input voltage required for the L78M09ABV to regulate properly?
  The minimum input voltage required for the L78M09ABV to regulate properly is around 11V, although this can vary depending on the specific application and output current requirements.
• Can I use the L78M09ABV in a high-temperature environment?
  The L78M09ABV is rated for operation up to 150°C, but its performance and reliability may degrade at high temperatures. It's recommended to derate the output current and input voltage at high temperatures to ensure reliable operation.
• How do I protect the L78M09ABV from input voltage surges and spikes?
  To protect the L78M09ABV from input voltage surges and spikes, use a TVS (Transient Voltage Suppressor) diode or a varistor in parallel with the input capacitor to clamp the voltage and prevent damage to the regulator.