LT3990IMSE-3.3#PBF datasheet by Linear Technology

LT3990IMSE-3.3#PBF Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the LT3990 can handle?
  The maximum input voltage that the LT3990 can handle is 15V. Exceeding this voltage may damage the device.
• How do I ensure the stability of the output voltage?
  To ensure the stability of the output voltage, it is recommended to use a minimum output capacitance of 10uF and a maximum ESR of 1 ohm. Additionally, the output voltage should be decoupled with a 10uF capacitor.
• What is the minimum input voltage required for the LT3990 to operate?
  The minimum input voltage required for the LT3990 to operate is 2.5V. However, the device can operate down to 2.2V with reduced performance.
• How do I calculate the output voltage of the LT3990?
  The output voltage of the LT3990 can be calculated using the following formula: Vout = 1.25 x (1 + R1/R2), where R1 and R2 are the resistors used in the feedback network.
• What is the maximum output current that the LT3990 can deliver?
  The maximum output current that the LT3990 can deliver is 3A. However, the device can deliver higher currents for short durations.