CDCP1803RGET datasheet by Texas Instruments

CDCP1803RGET 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 crosstalk.
• 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 10nF-100nF capacitor between the VCC and GND pins to filter out noise.
• What is the maximum input voltage that can be applied to the device?
  The maximum input voltage is 6.5V, but it's recommended to keep it below 5.5V to ensure reliable operation and prevent damage to the device.
• How do I calculate the output voltage ripple?
  The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency.
• What is the recommended input capacitor value and type?
  A 10uF-22uF ceramic or X5R/X7R capacitor is recommended for the input capacitor, placed as close to the VIN pin as possible.