PT5107M datasheet by Texas Instruments

PT5107M Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  Texas Instruments recommends a 2-layer PCB with a solid ground plane on the bottom layer and a thermal relief pattern on the top layer to ensure good heat dissipation. A minimum of 2 oz copper thickness is recommended for the PCB.
• How do I select the correct input capacitor for the PT5107M?
  The input capacitor should be selected based on the input voltage ripple, output voltage, and output current requirements. A minimum of 10uF ceramic capacitor with an X7R or X5R dielectric is recommended. The capacitor should be placed as close as possible to the VIN pin.
• What is the maximum output current capability of the PT5107M?
  The PT5107M can deliver up to 1.5A of output current, but this is dependent on the input voltage, output voltage, and thermal conditions. It's recommended to derate the output current based on the ambient temperature and thermal design.
• How do I implement overcurrent protection with the PT5107M?
  The PT5107M has a built-in overcurrent protection feature that can be enabled by connecting a resistor between the OCP pin and GND. The value of the resistor determines the overcurrent threshold. A typical value is 1kΩ for a 1.5A overcurrent limit.
• What is the recommended output capacitor value and type for the PT5107M?
  A minimum of 22uF ceramic capacitor with an X7R or X5R dielectric is recommended for the output capacitor. The capacitor should be placed as close as possible to the VOUT pin. The output capacitor value can be increased based on the output voltage ripple and load transient requirements.