Details

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BUY VIPER20SP https://www.utsource.net/itm/p/12609941.html

Parameter	Description	Value	Unit
Package	Encapsulation type	SO-8	-
Input Voltage (VIN)	Operating input voltage range	8.5 to 36	V
Output Voltage (VOUT)	Adjustable output voltage range	3.3 to 15	V
Output Current (IOUT)	Maximum continuous output current	1.0	A
Switching Frequency (fSW)	Fixed switching frequency	130	kHz
Quiescent Current (IQ)	Typical quiescent current	2.5	mA
Shutdown Current (ISD)	Shutdown mode current	0.1	渭A
Thermal Shutdown Temperature (TSD)	Thermal shutdown temperature	160	掳C
Operating Temperature Range (TOP)	Operating ambient temperature range	-40 to 125	掳C
Storage Temperature Range (TSTG)	Storage temperature range	-65 to 150	掳C
Junction Temperature (TJ)	Maximum junction temperature	150	掳C

Instructions for Using VIPER20SP

1. Power Supply Connection:

   • Connect the input power supply (V_IN) to the VIN pin.
   • Ensure the input voltage is within the specified range (8.5 to 36 V).

2. Output Configuration:

   • Set the desired output voltage (V_OUT) by using an external resistor divider network connected to the FB (Feedback) pin.
   • The output voltage can be adjusted between 3.3 V and 15 V.

3. Inductor Selection:

   • Choose an appropriate inductor based on the output current requirement and switching frequency.
   • The recommended inductance value is typically in the range of 10 渭H to 47 渭H.

4. Capacitor Selection:

   • Use a high-quality ceramic capacitor (10 渭F to 100 渭F) for the input (VIN) and output (VOUT) to ensure stable operation.
   • Place the capacitors as close as possible to the respective pins to minimize noise and parasitic effects.

5. Thermal Management:

   • Ensure adequate heat dissipation by providing a good thermal path from the package to the PCB or heatsink.
   • Monitor the junction temperature (T_J) to avoid exceeding the maximum limit of 150掳C.

6. Shutdown Function:

   • To enable the shutdown function, connect the SHDN pin to ground (GND).
   • The shutdown current is very low (0.1 渭A), which helps in reducing power consumption during standby.

7. Layout Considerations:

   • Follow good PCB layout practices to minimize electromagnetic interference (EMI).
   • Keep the high-current paths short and wide to reduce resistance and inductance.

8. Testing and Verification:

   • After assembly, test the circuit under various load conditions to ensure it meets the design specifications.
   • Verify the output voltage stability and efficiency.

By following these instructions, you can effectively use the VIPER20SP in your power supply designs.

(For reference only)