TPS80010ARSMR datasheet by Texas Instruments

TPS80010ARSMR 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 capacitors close to the IC, and use short, wide traces for the power paths.
• How do I ensure stability and prevent oscillations?
  Ensure the output capacitor has a low ESR, and the input capacitor has a high capacitance. Also, add a small ceramic capacitor (e.g., 10nF) between the VIN and GND pins to filter high-frequency noise.
• What is the maximum input voltage for the TPS80010ARSMR?
  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 overheating.
• How do I calculate the output voltage?
  The output voltage (VOUT) is determined by the resistive divider formed by R1 and R2. Use the formula: VOUT = 0.8V * (1 + R2/R1). Choose R1 and R2 to achieve the desired output voltage.
• What is the purpose of the EN pin, and how do I use it?
  The EN (enable) pin is an active-high input that enables or disables the regulator. Connect EN to VIN to enable the regulator, or connect it to GND to disable it. Use a pull-down resistor to ensure the regulator is disabled during power-up.