TPS2045ADR datasheet by Texas Instruments

TPS2045ADR Frequently Asked Questions (FAQs)

• What is the maximum current rating of the TPS2045ADR?
  The maximum current rating of the TPS2045ADR is 4A, but it can be limited by the thermal performance of the PCB and the ambient temperature.
• How do I ensure the stability of the output voltage?
  To ensure the stability of the output voltage, it is recommended to use a minimum output capacitance of 10uF with an ESR of 1ohm or less, and to place the capacitor close to the output pin.
• What is the purpose of the EN pin, and how do I use it?
  The EN (enable) pin is used to turn the device on and off. To use it, connect the EN pin to a logic-level signal (e.g. from a microcontroller) to enable or disable the device. When EN is low, the device is in shutdown mode and consumes minimal power.
• How do I choose the right input capacitor for the TPS2045ADR?
  Choose an input capacitor with a voltage rating that exceeds the maximum input voltage, and a capacitance value that is at least 1uF. The capacitor should also have a low ESR to minimize voltage ripple.
• What is the thermal derating of the TPS2045ADR, and how does it affect the device's performance?
  The thermal derating of the TPS2045ADR is 1.5°C/W. This means that the device's power rating decreases as the ambient temperature increases. It is essential to consider thermal derating when designing the system to ensure reliable operation.