DCR012403U datasheet by Texas Instruments

DCR012403U Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  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 and coupling.
• How do I ensure stability and prevent oscillations?
  Ensure that the output capacitor is properly sized and placed close to the output pin. Also, add a small ceramic capacitor (e.g., 10nF) between the VIN and GND pins to filter out high-frequency noise.
• What is the maximum input voltage that can be applied to the VIN pin?
  Although the datasheet specifies a maximum input voltage of 5.5V, it's recommended to limit the input voltage to 5V to ensure reliable operation and prevent damage to the device.
• How do I optimize the output voltage accuracy?
  Use a high-precision resistor divider network for the feedback resistors (RFBT and RFB) to minimize tolerance errors. Also, ensure that the output capacitor is of high quality and has low ESR.
• What is the recommended input capacitor value and type?
  A 10uF to 22uF ceramic capacitor (X5R or X7R dielectric) is recommended for the input capacitor. This helps to filter out input noise and ensures stable operation.