Details

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BUY LM2575T-12 CHINA ORIGINAL https://www.utsource.net/itm/p/11258284.html

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	VIN	7	-	40	V
Output Voltage	VOUT	-	12	-	V
Output Current	IOUT	-	3	-	A
Switching Frequency	fSW	-	52	-	kHz
Quiescent Current	IQ	-	5	-	mA
Dropout Voltage	VDROPOUT	-	1.8	-	V
Efficiency (Typical)	畏	-	84	-	%
Thermal Resistance (胃JA)	-	-	65	-	掳C/W
Operating Temperature	TOPR	-40	-	125	掳C
Storage Temperature	TSTG	-65	-	150	掳C

Instructions for Using LM2575T-12 CHINA ORIGINAL

1. Input Capacitor (CIN):

   • Place a 1 渭F ceramic capacitor close to the input pin to filter high-frequency noise.
   • For better performance, use a larger capacitor (e.g., 10 渭F).

2. Output Capacitor (COUT):

   • Use a 100 渭F electrolytic capacitor on the output to maintain stability.
   • For lower ripple, a 220 渭F or higher capacitor can be used.

3. Inductor (L):

   • Select an inductor with a value between 100 渭H and 1000 渭H.
   • Ensure the inductor can handle the maximum current without saturating.

4. Feedback Resistor (R1 and R2):

   • The output voltage is set by the ratio of R1 and R2.
   • For a fixed 12V output, no external resistors are needed as the IC is pre-set.

5. Bypass Capacitor (CBYPASS):

   • Place a 0.1 渭F ceramic capacitor across the feedback pin to ground to improve stability.

6. Thermal Considerations:

   • Ensure adequate heat dissipation, especially at high output currents.
   • Use a heatsink if necessary to keep the junction temperature within safe limits.

7. Layout Recommendations:

   • Keep the input and output capacitors close to the IC.
   • Use wide traces for power paths to minimize resistance and inductance.
   • Avoid placing the IC near heat sources or in areas with high electromagnetic interference.

8. Testing:

   • Before finalizing the design, test the circuit under various load conditions to ensure stability and efficiency.
   • Measure the output voltage and ripple to confirm that they meet the required specifications.

By following these instructions, you can ensure optimal performance and reliability of the LM2575T-12 CHINA ORIGINAL in your application.

(For reference only)