L4973V3.3 datasheet by STMicroelectronics

L4973V3.3 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the L4973V3.3 can handle?
  The L4973V3.3 can handle input voltages up to 15V, but it's recommended to keep it below 12V for optimal performance and reliability.
• How do I ensure the L4973V3.3 is stable and doesn't oscillate?
  To ensure stability, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, keep the input and output capacitors close to the IC and use a good quality PCB layout.
• What is the minimum load current required for the L4973V3.3 to regulate properly?
  The L4973V3.3 requires a minimum load current of 5mA to regulate properly. If the load current is less than 5mA, the output voltage may not be regulated accurately.
• Can I use the L4973V3.3 in a high-temperature environment?
  The L4973V3.3 is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the output current and voltage according to the temperature derating curve in the datasheet.
• How do I calculate the output voltage of the L4973V3.3?
  The output voltage of the L4973V3.3 is fixed at 3.3V, but it can be adjusted using an external resistor divider network. The output voltage can be calculated using the formula: Vout = 3.3V * (1 + R1/R2), where R1 and R2 are the resistors in the divider network.