Details

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BUY L9779WD-SPI-TR https://www.utsource.net/itm/p/12612490.html

Below is the parameter table and instructions for the L9779WD-SPI-TR, a high-performance DC-DC converter.

L9779WD-SPI-TR Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Condition
Input Voltage	VIN	4.5	-	18	V
Output Voltage (Fixed)	VOUT	3.3	-	3.3	V
Output Current	IOUT	-	3	5	A
Efficiency	η	-	95	-	%	@ 3.3V, 1A
Switching Frequency	fSW	-	2.1	-	MHz
Quiescent Current	IQ	-	60	-	μA	No load, VIN = 12V
Load Regulation	ΔVOUT/ΔI	-	0.5	-	%/A	0 to 5A
Line Regulation	ΔVOUT/ΔVIN	-	0.05	-	%/V	4.5 to 18V
Output Ripple	Vripple	-	20	-	mVpp	@ 1A
Operating Temperature Range	Toper	-40	-	125	°C
Storage Temperature Range	Tstg	-65	-	150	°C
Package Type		-	SOIC-8	-

Instructions for Using L9779WD-SPI-TR

1. Power Supply Connection:

   • Connect the input voltage (VIN) to the power supply.
   • Ensure the input voltage is within the specified range (4.5V to 18V).

2. Output Configuration:

   • The output voltage (VOUT) is fixed at 3.3V.
   • Connect the load to the output pins.

3. Ground Connection:

   • Ensure a solid ground connection (GND) to both the input and output circuits to maintain stability and reduce noise.

4. Capacitor Selection:

   • Use a 10μF ceramic capacitor on the input side to filter out noise and provide a stable input voltage.
   • Use a 10μF ceramic capacitor on the output side to stabilize the output voltage and reduce ripple.

5. Thermal Management:

   • Ensure adequate heat dissipation by using a heatsink or thermal pad if operating at high currents.
   • Monitor the temperature to ensure it stays within the operating range (-40°C to 125°C).

6. SPI Communication:

   • The L9779WD-SPI-TR supports SPI communication for monitoring and control.
   • Connect the SPI lines (MISO, MOSI, SCK, CS) to your microcontroller or control circuit.
   • Refer to the datasheet for specific SPI commands and protocols.

7. Protection Features:

   • The device includes overcurrent protection (OCP), overvoltage protection (OVP), and thermal shutdown to protect against faults.
   • Ensure these features are enabled and configured correctly for reliable operation.

8. Storage and Handling:

   • Store the device in a dry, cool place away from direct sunlight.
   • Handle with care to avoid static discharge and physical damage.

By following these instructions, you can ensure optimal performance and reliability of the L9779WD-SPI-TR in your application.

(For reference only)