UA7905CKCS datasheet by Texas Instruments

UA7905CKCS Frequently Asked Questions (FAQs)

• What is the recommended input capacitor value for the UA7905CKCS?
  The recommended input capacitor value is 1uF to 10uF, depending on the input voltage and output current requirements.
• How do I ensure the UA7905CKCS is stable and doesn't oscillate?
  To ensure stability, use a minimum output capacitor of 10uF, and ensure the output capacitor's ESR is less than 1 ohm. Also, use a 1kohm to 10kohm resistor in series with the output capacitor to prevent oscillation.
• What is the maximum input voltage that the UA7905CKCS can handle?
  The UA7905CKCS can handle a maximum input voltage of 35V, but it's recommended to operate it within 10V to 20V for optimal performance and reliability.
• Can I use the UA7905CKCS in a high-temperature environment?
  The UA7905CKCS is rated for operation up to 125°C, but its performance and reliability may degrade at high temperatures. It's recommended to operate it within 0°C to 85°C for optimal performance and reliability.
• How do I calculate the output voltage of the UA7905CKCS?
  The output voltage of the UA7905CKCS is determined by the resistor divider network connected to the feedback pin. Use the formula: Vout = 5V * (1 + R1/R2), where R1 and R2 are the resistors in the divider network.