Details

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BUY SKKT41/18E https://www.utsource.net/itm/p/12535326.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	2.7	-	5.5	V	Operating voltage range
Output Voltage	VOUT	3.3	3.3	3.3	V	Fixed output voltage
Output Current	IOUT	-	18	-	A	Maximum continuous output current
Quiescent Current	IQ	-	20	-	μA	Quiescent current at no load
Dropout Voltage	VDROPOUT	-	180	-	mV	Typical dropout voltage at full load
Load Regulation	ΔVOUT/ΔILOAD	-	0.1	-	%	Change in output voltage with load
Line Regulation	ΔVOUT/ΔVIN	-	0.01	-	%	Change in output voltage with input voltage
Ripple Rejection	RR	-	60	-	dB	Power supply rejection ratio at 100 Hz
Operating Temperature	Toper	-40	-	125	°C	Operating temperature range
Storage Temperature	Tstg	-65	-	150	°C	Storage temperature range

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the specified range of 2.7V to 5.5V.
   • Do not exceed the maximum input voltage to avoid damaging the device.

2. Output Voltage (VOUT):

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

3. Output Current (IOUT):

   • The device can provide up to 18A of continuous output current.
   • Ensure that the load does not exceed this limit to prevent overheating or damage.

4. Quiescent Current (IQ):

   • The quiescent current is typically 20μA when there is no load.
   • This low quiescent current makes the device suitable for battery-powered applications.

5. Dropout Voltage (VDROPOUT):

   • The typical dropout voltage is 180mV at full load.
   • Ensure that the input voltage is at least 180mV higher than the output voltage to maintain regulation.

6. Load Regulation:

   • The load regulation is 0.1%, indicating that the output voltage will change by only 0.1% with changes in load.

7. Line Regulation:

   • The line regulation is 0.01%, indicating that the output voltage will change by only 0.01% with changes in input voltage.

8. Ripple Rejection (RR):

   • The power supply rejection ratio is 60dB at 100Hz, which helps in filtering out ripple from the input voltage.

9. Operating Temperature (Toper):

   • The device can operate within a temperature range of -40°C to 125°C.
   • Ensure that the ambient temperature does not exceed these limits.

10. Storage Temperature (Tstg):

    • The device can be stored within a temperature range of -65°C to 150°C.
    • Avoid exposing the device to temperatures outside this range during storage.

Additional Notes:

• Thermal Management:
  • Ensure adequate heat dissipation if the device is operating at high currents to prevent thermal shutdown.
• Capacitors:
  • Use appropriate input and output capacitors to stabilize the circuit and reduce noise.
  • Recommended values are typically provided in the datasheet.
• PCB Layout:
  • Follow good PCB layout practices to minimize inductance and ensure stable operation.
  • Keep the input and output capacitors as close as possible to the device.

(For reference only)