LM4120AIM5-2.0 datasheet by Texas Instruments

LM4120AIM5-2.0 Frequently Asked Questions (FAQs)

• What is the recommended capacitor value for the output capacitor (Cout)?
  The recommended output capacitor value is 10uF to 22uF, with a minimum ESR of 5 ohms to ensure stability.
• How do I ensure the LM4120AIM5-2.0 is stable with a specific output capacitor?
  To ensure stability, the output capacitor should be selected such that its ESR is within the recommended range, and the capacitor's resonant frequency is above the unity-gain bandwidth of the device (approximately 10 kHz).
• What is the maximum allowed input voltage for the LM4120AIM5-2.0?
  The maximum allowed input voltage for the LM4120AIM5-2.0 is 12V, although it is recommended to operate the device within the specified operating voltage range of 4.5V to 10V for optimal performance.
• Can I use the LM4120AIM5-2.0 as a voltage regulator?
  No, the LM4120AIM5-2.0 is a voltage reference, not a voltage regulator. It is designed to provide a stable voltage reference, but it does not have the capability to regulate an output voltage.
• How do I layout the PCB to minimize noise and ensure accurate voltage reference?
  To minimize noise and ensure accurate voltage reference, it is recommended to follow good PCB layout practices, such as keeping the input and output traces separate, using a solid ground plane, and placing the output capacitor close to the device.