Details

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BUY A3979SLPTR-T https://www.utsource.net/itm/p/12426775.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	VCC	2.7	-	5.5	V	Operating supply voltage range
Output Current	IOUT	-	0.3	1.2	A	Maximum output current
Switching Frequency	fSW	100	500	1000	kHz	Adjustable switching frequency
Quiescent Current	IQ	1.5	2.0	2.5	mA	Current consumption in active state
Shutdown Current	ISD	0	0.1	0.5	μA	Current consumption in shutdown mode
Thermal Shutdown	TSD	-	160	-	°C	Temperature at which the device initiates thermal shutdown
Protection Features	-	-	-	-	-	Overcurrent protection, thermal shutdown, undervoltage lockout

Instructions for Use:

1. Power Supply Connection: Connect the supply voltage (VCC) between 2.7V and 5.5V to the VCC pin. Ensure a stable power supply to avoid fluctuations.

2. Output Configuration: The A3979SLPTR-T can deliver up to 1.2A of output current. Design your circuit considering the typical output current requirement.

3. Frequency Adjustment: Set the switching frequency using an external resistor connected to the RT/CLK pin. The frequency can be adjusted from 100kHz to 1000kHz.

4. Thermal Management: The device includes thermal shutdown protection that activates at approximately 160°C. Ensure adequate heat dissipation to prevent overheating.

5. Protection Features: Utilize the built-in overcurrent and undervoltage lockout protections by ensuring proper layout and component selection.

6. Shutdown Mode: To reduce power consumption, use the shutdown feature by pulling the SD pin low. This reduces the current consumption to less than 0.5μA.

7. Layout Considerations: For optimal performance, follow good PCB layout practices, including minimizing trace lengths for high-frequency signals and providing a solid ground plane.

(For reference only)