S-817A18ANB-CUHT2U datasheet by ABLIC Inc.

S-817A18ANB-CUHT2U Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  ABLIC recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended.
• How do I ensure stable output voltage during startup?
  To ensure stable output voltage during startup, ABLIC recommends adding a 1uF ceramic capacitor between the VIN pin and GND, and a 10uF electrolytic capacitor between the VOUT pin and GND.
• What is the maximum allowed input voltage ripple?
  The maximum allowed input voltage ripple is 100mVp-p. Exceeding this value may affect the regulator's stability and output voltage accuracy.
• Can I use this regulator in a high-temperature environment?
  The S-817A18ANB-CUHT2U is rated for operation up to 125°C. However, ABLIC recommends derating the output current by 50% when operating above 85°C to ensure reliable operation.
• How do I calculate the power dissipation of the regulator?
  Power dissipation can be calculated using the formula: Pd = (VIN - VOUT) x IOUT. ABLIC recommends keeping the power dissipation below 1.5W to ensure reliable operation.