LTC3901EGN#PBF datasheet by Linear Technology

LTC3901EGN#PBF Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the VIN pin?
  The maximum input voltage that can be applied to the VIN pin is 36V, but it's recommended to keep it below 30V for reliable operation.
• How do I choose the right inductor value for my application?
  The inductor value depends on the input voltage, output voltage, and switching frequency. A good starting point is to use the inductor selection guide in the datasheet or consult with Linear Technology's application notes.
• What is the purpose of the SS pin, and how do I use it?
  The SS pin is the soft-start pin, which allows the output voltage to ramp up slowly during startup. Connect a capacitor from SS to GND to set the soft-start time, or leave it open for a fast startup.
• Can I use the LTC3901EGN#PBF in a high-temperature environment?
  The LTC3901EGN#PBF is rated for operation up to 125°C, but the maximum junction temperature (TJ) should not exceed 150°C. Ensure proper thermal design and heat sinking to maintain a safe operating temperature.
• How do I synchronize the switching frequency with an external clock?
  The LTC3901EGN#PBF has a SYNC pin that allows synchronization with an external clock. Connect the external clock signal to the SYNC pin, and ensure the clock frequency is within the recommended range of 200kHz to 400kHz.