Details

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Parameter	Symbol	Min	Typ	Max	Unit	Notes
Input Voltage	VIN	4.5	-	18	V
Output Voltage	VOUT	0.9	-	5.5	V	Adjustable
Switching Frequency	fSW	-	700	-	kHz	Programmable
Output Current	IOUT	-	2	-	A	Continuous
Efficiency	畏	-	95	-	%	Typical at 5V in, 3.3V out, 1A load
Quiescent Current	IQ	-	60	-	渭A	Shutdown mode
Operating Temperature	TOPR	-40	-	125	掳C	Junction temperature
Storage Temperature	TSTG	-65	-	150	掳C

Instructions for Use:

1. Power Supply Connection:

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

2. Output Voltage Setting:

   • Set the desired output voltage using an external resistor divider network connected to the FB pin.

3. Switching Frequency Adjustment:

   • Adjust the switching frequency by connecting a resistor between the RT pin and ground. Refer to the datasheet for specific resistor values corresponding to desired frequencies.

4. Output Capacitor Selection:

   • Choose an output capacitor based on the required output ripple and stability criteria. Ceramic capacitors with X7R dielectric are recommended.

5. Thermal Considerations:

   • Ensure adequate heat dissipation to keep the junction temperature within operational limits. Consider using a heatsink if necessary.

6. Layout Guidelines:

   • Follow recommended PCB layout guidelines to minimize noise and improve performance. Keep high-current paths short and direct.

7. Protection Features:

   • The device includes protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout. Ensure these features are understood and utilized properly.

8. Testing and Validation:

   • After assembly, validate the design under various operating conditions to ensure stable and reliable operation.

For detailed specifications and application circuits, refer to the official datasheet provided by Texas Instruments.

(For reference only)