LT3990IMSE-5#PBF datasheet by Linear Technology

LT3990IMSE-5#PBF Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LT3990 can handle?
  The LT3990 can handle input voltages up to 60V, but it's recommended to operate within the specified input voltage range of 4.5V to 40V for optimal performance.
• How do I ensure the stability of the output voltage?
  To ensure stability, it's essential to follow the recommended layout and component selection guidelines, including the use of a minimum 10uF output capacitor with a low ESR, and a 1uF input capacitor.
• What is the maximum output current that the LT3990 can deliver?
  The LT3990 can deliver up to 2A of output current, but it's recommended to operate within the specified output current range of 0A to 1.5A for optimal performance and thermal considerations.
• How do I adjust the output voltage of the LT3990?
  The output voltage of the LT3990 can be adjusted by using a resistive divider network between the output and the FB pin, with the ratio of the resistors determining the output voltage.
• What is the purpose of the EN pin, and how do I use it?
  The EN (enable) pin is used to enable or disable the regulator. When the EN pin is pulled high, the regulator is enabled, and when it's pulled low, the regulator is disabled. This pin can be used to implement power sequencing or to shut down the regulator during standby modes.