S-1721A1218-I6T1U datasheet by ABLIC Inc.

S-1721A1218-I6T1U Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  ABLIC recommends a thermal layout with a thermal pad connected to a large copper area on the PCB, and a minimum of 2oz copper thickness. A thermal via array under the IC can improve heat dissipation.
• How do I ensure stability with a low-ESR output capacitor?
  To ensure stability with a low-ESR output capacitor, add a 1-10nF ceramic capacitor in parallel with the output capacitor to improve phase margin. Additionally, ensure the output capacitor's ESR is within the recommended range (10mΩ to 100mΩ).
• What is the maximum allowed voltage on the EN pin?
  The maximum allowed voltage on the EN (enable) pin is 6V. Exceeding this voltage may cause damage to the internal circuitry.
• Can I use this regulator in a high-temperature environment?
  The S-1721A1218-I6T1U is rated for operation up to 125°C. However, the output voltage accuracy and other specifications may degrade at high temperatures. Ensure the device is within its recommended operating conditions for reliable operation.
• How do I calculate the power dissipation of the regulator?
  Calculate the power dissipation (PD) using the formula: PD = (VIN - VOUT) x IOUT + (VIN x IQ), where IQ is the quiescent current. Ensure the calculated PD is within the recommended maximum power dissipation (500mW) to prevent overheating.