BD4719G-TR - ROHM Semiconductor

BD4719G-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.
• How do I ensure stable operation with a high-capacitance load?
  To ensure stable operation with a high-capacitance load, add a 1-10nF ceramic capacitor between the output pin and GND, and a 1-10uF electrolytic capacitor between VIN and GND. This will help reduce oscillation and improve stability.
• What is the maximum allowed voltage on the EN pin?
  The maximum allowed voltage on the EN pin is 6V. Exceeding this voltage may damage the device. It's recommended to use a voltage divider or a level shifter if the control signal is higher than 6V.
• Can I use the BD4719G-TR in a high-temperature environment?
  The BD4719G-TR is rated for operation up to 125°C. However, the device's performance and reliability may degrade at high temperatures. It's recommended to derate the output current and voltage according to the temperature derating curve in the datasheet.
• How do I calculate the power dissipation of the BD4719G-TR?
  The power dissipation of the BD4719G-TR can be calculated using the formula: Pd = (VIN - VOUT) x IOUT + (VIN x IQ), where IQ is the quiescent current. The maximum power dissipation is 2.5W.