Details

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BUY VIPER12ASTR https://www.utsource.net/itm/p/5381059.html

Parameter	Symbol	Min	Typ	Max	Unit
Input Voltage	VIN	4.5	-	40	V
Output Voltage	VOUT	0.8	-	36	V
Output Current	IOUT	-	1.2	2.5	A
Quiescent Current	IQ	-	50	100	μA
Shutdown Current	ISD	-	1	5	μA
Switching Frequency	fSW	-	1.2	1.5	MHz
Efficiency (Typical)	η	-	90	-	%
Thermal Shutdown	TSD	-	160	-	°C
Operating Temperature	TOPR	-40	-	125	°C
Storage Temperature	TSTG	-55	-	150	°C
Package Type	PKG	-	SOIC-8	-	-

Instructions for Using VIPER12ASTR

1. Input Voltage (VIN):

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

2. Output Voltage (VOUT):

   • Set the output voltage using external resistors according to the formula: [ V_ = 0.8 left(1 + fracright) ]
   • Choose resistors with low tolerance for better accuracy.

3. Output Current (IOUT):

   • The typical output current is 1.2A, but it can go up to 2.5A depending on the application.
   • Use an appropriate inductor and output capacitor to handle the maximum current.

4. Quiescent Current (IQ):

   • The quiescent current is typically 50μA and should not exceed 100μA.
   • This parameter is important for low-power applications.

5. Shutdown Current (ISD):

   • The shutdown current is very low, typically 1μA and should not exceed 5μA.
   • Use the shutdown pin to control the device when not in use.

6. Switching Frequency (fSW):

   • The switching frequency is typically 1.2MHz and can go up to 1.5MHz.
   • Adjust the external components to match the desired switching frequency.

7. Efficiency (η):

   • The typical efficiency is 90%.
   • Optimize the design by selecting high-efficiency components and minimizing losses.

8. Thermal Shutdown (TSD):

   • The device will shut down if the temperature exceeds 160°C.
   • Ensure proper heat dissipation to prevent thermal shutdown.

9. Operating Temperature (TOPR):

   • The operating temperature range is from -40°C to 125°C.
   • Ensure the device operates within this range to avoid damage.

10. Storage Temperature (TSTG):

    • The storage temperature range is from -55°C to 150°C.
    • Store the device in a suitable environment to prevent damage.

11. Package Type (PKG):

    • The VIPER12ASTR is available in an SOIC-8 package.
    • Follow the recommended PCB layout guidelines for optimal performance.

Additional Notes:

• Always refer to the datasheet for detailed specifications and application notes.
• Ensure all components used in the circuit are rated for the expected operating conditions.
• Test the circuit under various conditions to ensure reliability and performance.

(For reference only)