Details

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BUY LM2593HVS-ADJ/NOPB https://www.utsource.net/itm/p/9921148.html
IC REG BUCK ADJ 2A TO263-7

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	-	4.5	-	60	V
Output Voltage	VOUT	Adj.	1.23	-	60	V
Output Current	IOUT	Continuous	-	3	-	A
Switching Frequency	fSW	Fixed	-	150	-	kHz
Quiescent Current	IQ	VIN = 12V, VOUT = 5V	-	5	-	mA
Dropout Voltage	VDROPOUT	IOUT = 3A	-	1.8	-	V
Efficiency	η	VIN = 12V, VOUT = 5V, IOUT = 1A	-	84	-	%
Operating Temperature	TOPR	Junction	-40	-	125	°C

Instructions for LM2593HVS-ADJ/NOPB

1. Input Capacitor Selection:

   • Use a low ESR capacitor (like ceramic or tantalum) to ensure stability.
   • Recommended value is 0.47 μF or higher.

2. Output Capacitor Selection:

   • Choose a capacitor with low ESR and sufficient ripple current rating.
   • Typical values range from 22 μF to 100 μF.

3. Inductor Selection:

   • Select an inductor based on the desired output current and ripple voltage.
   • A typical inductance value is between 10 μH and 47 μH.

4. Feedback Resistor Network:

   • Set the output voltage using two resistors connected to the ADJ pin.
   • Calculate resistor values using the formula ( V_ = 1.23 left(1 + fracright) ).

5. Layout Considerations:

   • Keep input and output capacitors close to the IC.
   • Ensure ground connections are solid and direct to minimize noise.

6. Thermal Management:

   • Monitor the operating temperature and use heat sinks if necessary to keep within specified limits.

7. Protection Circuits:

   • Incorporate appropriate protection circuits (e.g., reverse polarity, overcurrent) as needed for your application.

8. Testing and Validation:

   • After assembly, test the circuit under various load conditions to ensure stable operation and correct output voltage.

(For reference only)