Details

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BUY LM2575HVT-ADJ https://www.utsource.net/itm/p/12535458.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN		7		40	V
Output Voltage	VOUT	Adj.	1.23		37	V
Output Current	IOUT	Continuous		3		A
Switching Frequency	fSW			52		kHz
Dropout Voltage	VDROPOUT	IOUT = 3A		1.8		V
Quiescent Current	IQ	VIN = 40V, no load		5		mA
Reference Voltage	VREF		1.22	1.23	1.24	V
Load Regulation		0 to 3A		0.5		%
Line Regulation		7 to 40V		0.1		%
Ripple Rejection				60		dB

Instructions for LM2575HVT-ADJ

1. Circuit Configuration:

   • The LM2575HVT-ADJ is an adjustable voltage regulator that can be configured to provide a wide range of output voltages.
   • Use the feedback resistor network to set the desired output voltage.

2. Component Selection:

   • Choose an inductor with a saturation current rating higher than the maximum expected load current.
   • Select input and output capacitors based on their ability to handle ripple currents and maintain stability.

3. Thermal Considerations:

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

4. Output Voltage Adjustment:

   • Connect two resistors (R1 and R2) between the output and adjust pins to set the output voltage using the formula: [ V_ = 1.23V times left(1 + fracright) ]

5. Bypass Capacitor:

   • Place a bypass capacitor close to the input pin to filter out noise and ensure stable operation.

6. Layout Recommendations:

   • Keep the traces from the switch node to the inductor short to minimize parasitic inductance.
   • Ensure proper grounding techniques to reduce noise and improve performance.

7. Protection Features:

   • The device includes overcurrent protection and thermal shutdown to safeguard against excessive load conditions.

(For reference only)