Details

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BUY FAN4800ASNY https://www.utsource.net/itm/p/11244352.html

Parameter	Description	Min	Typ	Max	Unit
VIN	Input Voltage	2.7	-	5.5	V
VOUT	Output Voltage	-	3.3	-	V
IOUT	Output Current	-	1.5	3.0	A
IQ	Quiescent Current	-	1.2	-	mA
fSW	Switching Frequency	1.0	-	1.2	MHz
SS	Soft-Start Time	-	1.2	-	ms
PG	Power Good Signal Delay	-	1.0	-	ms
Tj	Junction Temperature	-40	-	125	°C
θJA	Thermal Resistance (Junction to Ambient)	-	49	-	°C/W

Instructions for FAN4800ASNY

1. Power Supply:

   • Ensure the input voltage is within the range of 2.7V to 5.5V.
   • Connect the input voltage to the VIN pin and ground to GND.

2. Output Configuration:

   • The output voltage is fixed at 3.3V.
   • Ensure the load current does not exceed 3.0A.

3. Quiescent Current:

   • The quiescent current is typically 1.2mA. This is the current drawn by the device when it is active but not driving a load.

4. Switching Frequency:

   • The switching frequency is between 1.0MHz and 1.2MHz. This helps in minimizing the size of external components like inductors and capacitors.

5. Soft-Start:

   • The soft-start time is 1.2ms, which helps in reducing inrush currents and preventing voltage overshoots during startup.

6. Power Good Signal:

   • The power good signal delay is 1.0ms. This indicates that the output voltage has stabilized and is within the specified range.

7. Thermal Management:

   • The junction temperature should be kept within -40°C to 125°C.
   • Use appropriate heatsinking or cooling methods if the device is expected to operate near the maximum temperature.

8. Thermal Resistance:

   • The thermal resistance from the junction to ambient (θJA) is 49°C/W. This value is important for calculating the heat dissipation requirements.

9. Layout Considerations:

   • Keep the input and output capacitors close to the device to minimize parasitic inductance.
   • Use wide and short traces for power and ground connections to reduce resistance and inductance.

10. Storage and Handling:

    • Store the device in a dry and cool environment.
    • Handle with care to avoid damage to the pins and the package.

(For reference only)