Instructions for Using FAN5308MPX

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V.
   • Use appropriate decoupling capacitors (e.g., 10μF ceramic) close to the VIN pin to stabilize the input voltage.

2. Output Voltage (VOUT):

   • The output voltage is fixed at 3.3V. No external components are required to set this voltage.

3. Output Current:

   • The device can provide up to 3.0A of output current, with typical performance at 1.5A.
   • Ensure adequate heat dissipation if operating near the maximum current to avoid thermal shutdown.

4. Quiescent Current (IQ):

   • The quiescent current is typically 2.4μA, which helps in maintaining high efficiency even at low load conditions.

5. Shutdown Current (ISD):

   • When the shutdown pin (SHDN) is pulled low, the device enters a low-power mode with a shutdown current of 0.1μA.

6. Efficiency:

   • The efficiency is typically 90% at a load current of 1A. Use the device in applications where high efficiency is required.

7. Switching Frequency (fSW):

   • The switching frequency is fixed at 1.5MHz, which allows for the use of small external components.

8. Thermal Management:

   • The device has a thermal shutdown feature that activates at 160°C to protect against overheating.
   • Ensure proper PCB layout and thermal management to keep the junction temperature below the thermal shutdown threshold.

9. Operating Temperature (TOPR):

   • The device is rated to operate from -40°C to 85°C. Ensure that the ambient temperature and thermal design allow for operation within this range.

10. Storage Temperature (TSTG):

    • Store the device in a temperature range of -40°C to 150°C to prevent damage.

11. PCB Layout:

    • Place the inductor and output capacitor as close as possible to the device to minimize parasitic inductance and improve stability.
    • Use wide traces for power and ground connections to reduce resistance and improve heat dissipation.

12. Capacitors:

    • Use low ESR (Equivalent Series Resistance) capacitors for both input and output to ensure stable operation and efficient performance.
    • Recommended values: 10μF ceramic for input and 10μF ceramic for output.

13. Inductor Selection:

    • Choose an inductor with a saturation current higher than the maximum output current and a low DC resistance (DCR) to minimize power loss.
    • Typical inductor value: 1.0μH to 2.2μH.

14. Shutdown Pin (SHDN):

    • To enable the device, pull the SHDN pin high (e.g., to VIN).
    • To disable the device, pull the SHDN pin low (e.g., to GND).

By following these instructions, you can ensure optimal performance and reliability of the FAN5308MPX in your application.