BD5246FVE-TR - ROHM Semiconductor

BD5246FVE-TR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  ROHM 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, and the thermal pad should be connected to a ground plane or a dedicated heat sink.
• How do I ensure stable operation with a high-capacitance output capacitor?
  To ensure stable operation with a high-capacitance output capacitor, ROHM recommends adding a 1-10nF ceramic capacitor in parallel with the output capacitor to reduce the equivalent series resistance (ESR) and prevent oscillation.
• What is the maximum allowed voltage on the EN pin?
  The maximum allowed voltage on the EN pin is 6V, which is the same as the maximum input voltage of the device. Applying a voltage higher than 6V on the EN pin may damage the device.
• Can I use the BD5246FVE-TR in a high-temperature environment?
  The BD5246FVE-TR is rated for operation up to 125°C, but ROHM recommends derating the output current and voltage to ensure reliable operation. Consult the datasheet and ROHM's application notes for more information on high-temperature operation.
• How do I calculate the power dissipation of the device?
  The power dissipation of the BD5246FVE-TR can be calculated using the formula: Pd = (Vin - Vout) x Iout + Vin x Iq, where Vin is the input voltage, Vout is the output voltage, Iout is the output current, and Iq is the quiescent current. Consult the datasheet for the values of Iq and other parameters.