SMA3117-TL-H - onsemi

SMA3117-TL-H Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  A thermal pad on the bottom of the package should be connected to a large copper area on the PCB to dissipate heat. A minimum of 2oz copper thickness is recommended. Additionally, vias should be placed under the thermal pad to connect to the copper area.
• How do I ensure the device is properly biased for optimal performance?
  The SMA3117-TL-H requires a stable input voltage (VIN) between 2.7V and 5.5V. Ensure the input capacitor (CIN) is placed close to the VIN pin and has a low ESR. A 1uF ceramic capacitor is recommended. Also, ensure the output capacitor (COUT) is placed close to the VOUT pin and has a low ESR.
• What is the maximum output current capability of the SMA3117-TL-H?
  The SMA3117-TL-H can deliver up to 1.5A of output current. However, the maximum output current is dependent on the input voltage, output voltage, and ambient temperature. Refer to the datasheet for specific current limits based on these conditions.
• How do I protect the device from overvoltage and undervoltage conditions?
  The SMA3117-TL-H has built-in overvoltage protection (OVP) and undervoltage lockout (UVLO) features. However, additional protection can be achieved by adding external components such as a voltage supervisor or a reset IC to monitor the input voltage and reset the system if it falls outside the recommended range.
• What is the recommended input capacitor type and value for the SMA3117-TL-H?
  A 1uF to 10uF ceramic capacitor (X5R or X7R dielectric) is recommended for the input capacitor (CIN). The capacitor should be placed close to the VIN pin and have a low ESR to minimize voltage ripple and ensure stable operation.