Details

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BUY TPS54519RTER https://www.utsource.net/itm/p/12598443.html

Parameter	Symbol	Test Conditions	Min	Typical	Max	Unit
Input Voltage	VIN	-	4.5	-	60	V
Output Voltage	VOUT	-	0.8	-	5.5	V
Output Current	IOUT	-	-	3	-	A
Switching Frequency	fSW	-	-	500	-	kHz
Efficiency	η	VOUT = 5V, IOUT = 3A	-	92	-	%
Quiescent Current	IQ	VIN = 12V, VOUT = 5V, IOUT = 0A	-	55	-	μA
Shutdown Current	ISD	VIN = 12V, EN = Low	-	1	-	μA
Thermal Shutdown Temperature	TSD	-	-	160	-	°C
Operating Temperature Range	TOPR	-	-40	-	125	°C
Storage Temperature Range	TSTG	-	-65	-	150	°C

Instructions for TPS54519RTER

1. Power Supply Connection:

   • Connect the input voltage (VIN) to the power supply within the specified range of 4.5V to 60V.
   • Ensure the output voltage (VOUT) is set to the desired level between 0.8V and 5.5V using the feedback resistor network.

2. Output Configuration:

   • Use the feedback resistors (R1 and R2) to set the output voltage according to the formula: [ V_ = V_ left(1 + fracright) ] where ( V_ = 0.8V ).

3. Inductor Selection:

   • Choose an inductor with a value that ensures stable operation at the desired switching frequency (500kHz). Refer to the datasheet for recommended inductor values based on output current and voltage.

4. Capacitor Selection:

   • Select input and output capacitors to meet the ripple and transient response requirements. Typically, ceramic capacitors with low ESR are recommended.

5. Enable Pin (EN):

   • The enable pin can be used to control the on/off state of the converter. Apply a high signal (≥1.2V) to turn on the converter and a low signal (≤0.8V) to turn it off.

6. Thermal Management:

   • Ensure proper thermal management by providing adequate heat sinking or PCB copper area to dissipate heat, especially when operating at high currents or in high ambient temperatures.

7. Layout Considerations:

   • Follow good PCB layout practices to minimize noise and ensure stable operation. Keep the input and output capacitor leads short and place them close to the IC.

8. Protection Features:

   • The TPS54519RTER includes overcurrent protection, thermal shutdown, and undervoltage lockout (UVLO) to protect the device from damage under fault conditions.

9. Testing and Validation:

   • After assembly, test the circuit to ensure it meets the required performance specifications. Measure the output voltage, current, and efficiency under various load conditions.

For more detailed information, refer to the datasheet and application notes provided by Texas Instruments.

(For reference only)