LM2591HVSX-ADJ/NOPB: Top Choice in United States (USA) Utsource Holding Company Limited

Description

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	η	VIN = 12V, VOUT = 5V, IOUT = 3A	-	92	-	%

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.
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.
Thermal Considerations:
- Ensure adequate heat sinking if operating at high currents or in high ambient temperatures.
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.
Testing:
- Verify the output voltage and ripple under different load conditions.
- Check the efficiency and temperature rise during prolonged operation.
Safety:
- Always use appropriate safety measures when handling high voltages.
- Ensure proper isolation and grounding in your design.

(For reference only)