Details

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BUY LM2591HVSX-ADJ/NOPB https://www.utsource.net/itm/p/12534739.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Operating	4.5	-	60	V
Output Voltage Range	VOUT	Adjustable	1.23	-	60	V
Output Current	IOUT	Continuous	-	3	-	A
Switching Frequency	fSW		-	150	-	kHz
Quiescent Current	IQ	No load, VIN = 12V	-	5	-	mA
Dropout Voltage	VDROPOUT	IOUT = 3A, VIN = 12V	-	1.2	-	V
Efficiency	畏	VIN = 12V, VOUT = 5V, IOUT = 3A	-	92	-	%

Instructions for LM2591HVSX-ADJ/NOPB

1. Circuit Design:

   • Ensure the input voltage (VIN) is within the range of 4.5V to 60V.
   • Set the output voltage using external resistors according to the formula: [ V_ = 1.23 times left(1 + fracright) ]
   • Choose inductor and capacitor values suitable for the switching frequency and load conditions.

2. Component Placement:

   • Place input and output capacitors close to the IC to minimize noise and improve transient response.
   • Use low ESR capacitors for better performance.

3. Thermal Considerations:

   • Ensure adequate heat sinking if operating at high currents or in high ambient temperatures.

4. PCB Layout:

   • Keep the loop area small between the input capacitor, inductor, and diode to reduce EMI.
   • Use wide traces for power paths to minimize voltage drops.

5. Testing:

   • Verify the output voltage and ripple under different load conditions.
   • Check the efficiency and temperature rise during prolonged operation.

6. Safety:

   • Always use appropriate safety measures when handling high voltages.
   • Ensure proper isolation and grounding in your design.

(For reference only)