TPS54202DDCT

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Instructions for TPS54202DDCT:

1. Power Supply Connection:

   • Connect the input voltage (VIN) to the power supply within the specified range of 3V to 17V.
   • Ensure proper bypass capacitors are placed close to the VIN pin to minimize noise and stabilize the input voltage.

2. Output Configuration:

   • Set the desired output voltage by using an external resistor divider connected to the FB (feedback) pin.
   • The formula for setting the output voltage is ( V_ = V_ times (1 + frac) ), where ( V_ = 0.8V ).

3. Inductor Selection:

   • Choose an inductor based on the switching frequency and output current requirements.
   • Refer to the datasheet for recommended inductor values that ensure stable operation.

4. Capacitor Selection:

   • Select an output capacitor that provides low ESR and adequate ripple current handling capability.
   • Use ceramic capacitors for best performance, ensuring they meet the ripple current ratings.

5. Thermal Considerations:

   • Ensure adequate heat dissipation for the device, especially under high load conditions.
   • Place the device in areas with good airflow or consider adding a heatsink if necessary.

6. Shutdown Functionality:

   • To put the device into shutdown mode, pull the EN (enable) pin low.
   • In shutdown mode, the quiescent current drops to approximately 0.5 μA.

7. PCB Layout Recommendations:

   • Keep the layout compact and minimize trace lengths, especially for high-frequency nodes like SW (switch node).
   • Ensure ground planes are solid and well-connected to minimize parasitic inductance and improve stability.

For detailed specifications and additional design considerations, refer to the official datasheet provided by Texas Instruments.