SM74611KTTR datasheet by Texas Instruments

SM74611KTTR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  A 4-layer PCB with a solid ground plane and thermal vias is recommended. Ensure a low-impedance path for the output capacitors and keep the input capacitors close to the IC.
• How do I optimize the output filter design for minimal EMI?
  Use a pi-filter configuration with a common-mode choke and a differential-mode inductor. Ensure the output capacitors are placed close to the IC and the output inductor is placed close to the load.
• What is the recommended input capacitor type and value for this regulator?
  A low-ESR ceramic capacitor (e.g., X5R or X7R) with a value between 10uF to 22uF is recommended. The capacitor should be placed close to the IC and have a low inductance path to the input pin.
• How do I ensure stability and prevent oscillations in the regulator?
  Ensure the output capacitor has a low ESR and is placed close to the IC. Also, add a small ceramic capacitor (e.g., 10nF) between the output and ground to improve stability.
• What is the maximum input voltage that can be applied to the regulator?
  The maximum input voltage is 18V, but it's recommended to keep the input voltage below 15V to ensure reliable operation and minimize power dissipation.