TPS3801L30DCKRG4 datasheet by Texas Instruments

TPS3801L30DCKRG4 Frequently Asked Questions (FAQs)

• What is the recommended layout for the TPS3801L30DCKRG4 to ensure optimal performance?
  The recommended layout for the TPS3801L30DCKRG4 involves placing the device close to the power source, using a solid ground plane, and keeping the input and output capacitors close to the device. Additionally, it is recommended to use a Kelvin connection for the sense pins to minimize noise and ensure accurate voltage sensing.
• How do I choose the correct resistor values for the R1 and R2 resistors in the voltage detection circuit?
  The values of R1 and R2 depend on the desired trip point voltage and the hysteresis required. A higher R1 value will result in a higher trip point voltage, while a higher R2 value will result in a larger hysteresis. TI provides a calculator tool to help with resistor selection.
• What is the purpose of the DELAY pin, and how do I use it?
  The DELAY pin allows the user to delay the reset signal output after a fault condition is detected. This can be useful in systems where a brief fault condition is expected, such as during power-up or power-down. The delay time is set by an external capacitor connected to the DELAY pin.
• Can I use the TPS3801L30DCKRG4 in a high-temperature environment?
  The TPS3801L30DCKRG4 is rated for operation up to 125°C, but the device's accuracy and reliability may be affected at high temperatures. It is recommended to consult the datasheet and application notes for guidance on using the device in high-temperature environments.
• How do I ensure that the TPS3801L30DCKRG4 is properly powered down during shutdown?
  To ensure proper power-down, the input voltage should be reduced to below 0.5V, and the EN pin should be pulled low. Additionally, the device should be in a stable state before power-down to prevent unwanted reset signals.