Details

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BUY SC408150MFN https://www.utsource.net/itm/p/12599567.html

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	VIN	2.7	-	5.5	V
Output Voltage	VOUT	-	3.3	-	V
Output Current	IOUT	-	800	-	mA
Quiescent Current	IQ	-	10	-	渭A
Dropout Voltage	VDROP	-	0.3	-	V
Shutdown Current	ISD	-	1	-	渭A
Operating Temperature	TOP	-40	-	85	掳C
Storage Temperature	TSTG	-65	-	150	掳C
Thermal Resistance (胃JA)	-	-	45	-	掳C/W

Instructions for Using SC408150MFN

1. Input Voltage (V_IN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V.
   • Use appropriate decoupling capacitors (typically 10渭F) near the input pin to stabilize the input voltage.

2. Output Voltage (V_OUT):

   • The output voltage is fixed at 3.3V.
   • Use a suitable output capacitor (typically 10渭F) to filter out any ripple and ensure stable output.

3. Output Current (I_OUT):

   • The device can provide up to 800mA of output current.
   • Ensure that the load does not exceed this limit to avoid overheating or damage.

4. Quiescent Current (I_Q):

   • The quiescent current is typically 10渭A, which is very low, making the device suitable for battery-powered applications.

5. Dropout Voltage (V_DROP):

   • The dropout voltage is typically 0.3V, meaning the input voltage should be at least 0.3V higher than the output voltage to maintain regulation.

6. Shutdown Current (I_SD):

   • When the shutdown pin is pulled low, the device enters a low-power mode with a typical shutdown current of 1渭A.

7. Operating Temperature (T_OP):

   • The operating temperature range is from -40掳C to 85掳C. Ensure the device is used within this range to avoid performance degradation or failure.

8. Storage Temperature (T_STG):

   • The storage temperature range is from -65掳C to 150掳C. Store the device in a dry and temperature-controlled environment.

9. Thermal Resistance (胃_JA):

   • The thermal resistance from junction to ambient is typically 45掳C/W. Ensure proper heat dissipation if the device is expected to operate under high load conditions.

10. PCB Layout:

    • Place the device close to the load to minimize trace resistance and inductance.
    • Use wide and short traces for power and ground connections to reduce parasitic effects.
    • Ensure adequate copper area for heat dissipation if necessary.

11. Capacitor Selection:

    • Use ceramic capacitors for both input and output filtering due to their low ESR and high frequency performance.
    • Ensure the capacitors have a voltage rating higher than the maximum expected voltage on each rail.

12. Shutdown Pin:

    • To enable the device, leave the shutdown pin floating or connect it to the input voltage.
    • To disable the device, pull the shutdown pin to ground using a resistor or a switch.

13. Overvoltage Protection:

    • Consider adding overvoltage protection (OVP) circuits to protect the device from transient voltage spikes.

14. Undervoltage Lockout (UVLO):

    • The device has built-in undervoltage lockout to prevent operation when the input voltage is too low. Ensure the input voltage is above the UVLO threshold to maintain proper operation.

(For reference only)