TPS2551DRVT datasheet by Texas Instruments

TPS2551DRVT Frequently Asked Questions (FAQs)

• What is the maximum current rating of the TPS2551DRVT?
  The maximum current rating of the TPS2551DRVT is 2.5A, but it can be limited by the thermal performance of the PCB and the ambient temperature.
• How do I ensure the TPS2551DRVT is properly powered on and off?
  To ensure proper power-on and power-off, the EN pin should be driven high to turn on the device, and driven low to turn it off. The EN pin should be driven slowly (typically 1-10ms) to prevent inrush currents.
• What is the purpose of the FLT pin, and how do I use it?
  The FLT pin is an open-drain output that indicates an overcurrent or overtemperature fault. It can be connected to a microcontroller or other logic circuit to detect faults and take corrective action.
• How do I choose the correct sense resistor value for the TPS2551DRVT?
  The sense resistor value should be chosen based on the desired overcurrent threshold. A smaller sense resistor value will trigger the overcurrent protection at a higher current, while a larger value will trigger it at a lower current.
• Can I use the TPS2551DRVT in a high-temperature environment?
  The TPS2551DRVT is rated for operation up to 125°C, but the maximum junction temperature should be derated based on the ambient temperature and the thermal performance of the PCB.