TPS2149IDGNR datasheet by Texas Instruments

TPS2149IDGNR Frequently Asked Questions (FAQs)

• What is the maximum current that can be sunk by the TPS2149IDGNR?
  The TPS2149IDGNR can sink up to 1.5A of current, but it's recommended to limit it to 1A for reliable operation.
• How do I ensure the TPS2149IDGNR switches quickly enough for my application?
  To ensure fast switching, make sure to use a low-ESR capacitor (less than 1 ohm) and a short trace length between the capacitor and the device. Also, use a pull-up resistor (around 1k ohm) on the EN pin to ensure fast turn-on.
• What is the recommended layout for the TPS2149IDGNR to minimize EMI?
  To minimize EMI, place the device close to the load, use a solid ground plane, and keep the input and output traces separate. Also, use a shielded inductor and orient it to minimize radiation.
• Can I use the TPS2149IDGNR in a high-temperature environment?
  The TPS2149IDGNR is rated for operation up to 125°C, but it's recommended to derate the current output by 1.5mA/°C above 85°C to ensure reliable operation.
• How do I protect the TPS2149IDGNR from overvoltage?
  Use a TVS diode or a zener diode on the input pin to clamp the voltage to a safe level. Also, ensure that the input capacitor is rated for the maximum input voltage.