LM3509SD/NOPB datasheet by Texas Instruments

LM3509SD/NOPB Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LM3509SD?
  The maximum input voltage that can be applied to the LM3509SD is 18V. Exceeding this voltage may damage the device.
• How do I ensure the stability of the output voltage in the LM3509SD?
  To ensure stability, a minimum output capacitance of 10uF is recommended, and the output capacitor should be placed as close to the output pin as possible.
• What is the maximum output current that the LM3509SD can deliver?
  The maximum output current that the LM3509SD can deliver is 3A. Exceeding this current may cause the device to overheat or shut down.
• How do I protect the LM3509SD from overheating?
  To protect the LM3509SD from overheating, ensure good thermal conductivity between the device and the PCB, and provide adequate airflow around the device. A heat sink may be required for high-power applications.
• Can I use the LM3509SD in a high-temperature environment?
  The LM3509SD is rated for operation up to 125°C. However, the device's performance and reliability may degrade at high temperatures. Ensure that the device is properly cooled and derate the output current accordingly.