Instructions for Use

1. Power Supply Connection:

   • Connect the input voltage to the VIN pin.
   • Ensure the input voltage is within the specified range (4.5V to 60V).

2. Output Voltage Setting:

   • Use the feedback resistor network to set the output voltage.
   • The output voltage can be adjusted using the formula: ( V_ = 1.23V times (1 + frac) ).

3. Inductor Selection:

   • Choose an inductor with a value that ensures stable operation at the desired frequency.
   • Refer to the datasheet for recommended inductor values based on the operating frequency.

4. Capacitor Selection:

   • Use a low ESR capacitor for the input (CIN) to filter the input voltage.
   • Select an appropriate output capacitor (COUT) to stabilize the output voltage and reduce ripple.

5. Frequency Setting:

   • Adjust the external resistor (RT) to set the operating frequency.
   • The frequency can be calculated using the formula: ( f_ = frac{1.08MHz} ).

6. Thermal Management:

   • Ensure adequate heat dissipation by providing a good thermal path to the PCB or heatsink.
   • Monitor the temperature to avoid exceeding the maximum operating temperature.

7. Protection Circuits:

   • The S3300 includes overcurrent protection and thermal shutdown features.
   • These features will automatically shut down the regulator if the current exceeds the limit or the temperature becomes too high.

8. Layout Considerations:

   • Keep the power supply and ground traces short and wide to minimize parasitic inductance.
   • Place the input and output capacitors close to the IC to reduce noise and improve stability.

9. Testing:

   • After assembly, test the circuit under various load conditions to ensure it operates correctly.
   • Verify the output voltage and current limits meet the design specifications.