Details

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BUY SB82442FX https://www.utsource.net/itm/p/6941794.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	V_IN	4.5	-	20	V	Operating input voltage range
Output Voltage	V_OUT	-	3.3	-	V	Fixed output voltage
Output Current	I_OUT	-	1	2	A	Continuous output current
Switching Frequency	f_SW	-	1.2	-	MHz	Internal oscillator frequency
Quiescent Current	I_Q	-	70	-	μA	Supply current in operation
Shutdown Current	I_SD	-	1	-	μA	Supply current in shutdown mode
Dropout Voltage	V_DROPOUT	-	280	-	mV	At full load
Efficiency	η	-	90	-	%	Typical efficiency at 1A

Instructions for SB82442FX

1. Installation:

   • Ensure that the input voltage is within the specified range (4.5V to 20V).
   • Connect the input capacitor (C_IN) close to the VIN and GND pins.
   • Place the output capacitor (C_OUT) near the VOUT and GND pins.

2. Operation:

   • The device provides a fixed 3.3V output voltage.
   • For optimal performance, ensure the ambient temperature does not exceed the maximum operating temperature.

3. Shutdown Mode:

   • To enter shutdown mode, pull the SHDN pin low. This reduces the supply current to approximately 1μA.

4. Thermal Considerations:

   • Monitor the junction temperature to ensure it stays within safe limits for reliable operation.

5. Output Capacitor Selection:

   • Choose an output capacitor with low ESR to minimize output ripple.

6. Input Capacitor Selection:

   • Use an input capacitor with sufficient capacitance to handle transient conditions.

7. PCB Layout:

   • Keep the layout compact, especially for power and ground connections, to reduce noise and improve stability.

8. Applications:

   • Ideal for portable devices, battery-powered systems, and applications requiring efficient voltage regulation.

(For reference only)