SRC4382IPFBR datasheet by Texas Instruments

SRC4382IPFBR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the SRC4382IPFBR?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output traces short and away from each other to minimize noise coupling.
• How do I ensure the SRC4382IPFBR is properly decoupled?
  Use a 10uF ceramic capacitor and a 1uF ceramic capacitor in parallel, placed as close as possible to the VIN pin. Add a 10nF capacitor between the VIN and GND pins for high-frequency decoupling.
• What is the maximum input voltage that can be applied to the SRC4382IPFBR?
  The maximum input voltage is 5.5V, but it's recommended to keep it below 5V to ensure reliable operation and minimize power dissipation.
• How do I configure the SRC4382IPFBR for a specific output voltage?
  Use the FB (feedback) pin to set the output voltage. Connect a resistive divider from the output to the FB pin, and adjust the resistor values to achieve the desired output voltage.
• What is the thermal derating curve for the SRC4382IPFBR?
  The thermal derating curve is not explicitly stated in the datasheet, but as a general guideline, the device can operate up to 125°C junction temperature. Derate the output current by 1.5mA/°C above 85°C.