Details

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BUY MC33972ATEW https://www.utsource.net/itm/p/4680993.html
Multiple Switch Detection Interface with Suppressed Wake-Up Automotive 32-Pin SOIC W Tube

Parameter	Description	Min	Typ	Max	Unit
Input Voltage (VIN)	Operating input voltage range	4.5	-	40	V
Output Voltage (VOUT)	Adjustable output voltage	1.2	-	35	V
Output Current (IOUT)	Maximum continuous output current	-	3	5	A
Quiescent Current (IQ)	Supply current with no load	-	2.5	-	mA
Shutdown Current (ISD)	Supply current in shutdown mode	-	0.1	-	μA
Switching Frequency (FSW)	Fixed switching frequency	-	250	-	kHz
Efficiency (η)	Typical efficiency at full load	-	90	-	%
Thermal Shutdown (TSD)	Thermal shutdown temperature	-	-	160	°C
Operating Temperature (TA)	Ambient operating temperature range	-40	-	125	°C
Storage Temperature (TSTG)	Storage temperature range	-65	-	150	°C

Instructions for Use:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the specified range of 4.5V to 40V.
   • Use appropriate input filtering and decoupling capacitors to stabilize the input voltage.

2. Output Voltage (VOUT):

   • Set the output voltage using external resistors connected to the feedback (FB) pin.
   • Refer to the datasheet for the specific resistor values required to achieve the desired output voltage.

3. Output Current (IOUT):

   • The maximum continuous output current is 5A, but the typical operating current is 3A.
   • Ensure the inductor and other components can handle the maximum current.

4. Quiescent Current (IQ):

   • The quiescent current is typically 2.5mA when there is no load on the output.
   • This value should be considered in low-power applications.

5. Shutdown Current (ISD):

   • When the shutdown (SHDN) pin is pulled low, the device enters a low-power mode with a typical shutdown current of 0.1μA.
   • Use this feature to conserve power in battery-operated systems.

6. Switching Frequency (FSW):

   • The fixed switching frequency is 250kHz.
   • This frequency helps in selecting the appropriate inductor and capacitor values for the output filter.

7. Efficiency (η):

   • The typical efficiency at full load is 90%.
   • Ensure good thermal management to maintain high efficiency and prevent overheating.

8. Thermal Shutdown (TSD):

   • The device will automatically shut down if the junction temperature exceeds 160°C.
   • Use a heatsink or other cooling methods to keep the temperature within safe limits.

9. Operating Temperature (TA):

   • The ambient operating temperature range is from -40°C to 125°C.
   • Ensure the device is used within this range to avoid damage or reduced performance.

10. Storage Temperature (TSTG):

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

For detailed application circuits and additional information, refer to the MC33972ATEW datasheet.

(For reference only)