Share:
Specifications
SKU: 11225383
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage | VIN | 7.0 | - | 40.0 | V |
| Output Voltage | VOUT | - | 5.0 | - | V |
| Output Current | IOUT | - | 3.0 | - | A |
| Quiescent Current | IQ | - | 5.0 | - | mA |
| Dropout Voltage | VDROPOUT | - | 1.2 | - | V |
| Switching Frequency | fSW | - | 52 | - | kHz |
| Efficiency | η | - | 84 | - | % |
| Load Regulation | - | - | 0.05 | - | % |
| Line Regulation | - | - | 0.01 | - | %/V |
| Ripple Rejection | - | - | 60 | - | dB |
| Start-Up Time | tSTART | - | 10 | - | ms |
| Thermal Shutdown | TSD | - | 160 | - | °C |
| Operating Temperature | TOPR | -40 | - | 125 | °C |
| Storage Temperature | TSTG | -65 | - | 150 | °C |
Instructions for Using the LM2575HVS-5.0:
Input Capacitor (CIN):
- Use a 1 μF ceramic capacitor or a 10 μF electrolytic capacitor to filter input noise and provide a stable input voltage.
- Place the capacitor as close as possible to the input pin of the LM2575HVS-5.0.
Output Capacitor (COUT):
- Use a 100 μF electrolytic capacitor to smooth the output voltage.
- For better transient response, add a 0.1 μF ceramic capacitor in parallel with the electrolytic capacitor.
- Place the capacitors close to the output pin of the LM2575HVS-5.0.
Inductor (L):
- Use a 100 μH inductor for typical applications.
- Ensure the inductor has a saturation current rating higher than the maximum output current.
Feedback Resistor Network:
- The LM2575HVS-5.0 is pre-set to 5.0 V output, so no external feedback resistors are required.
- If you need to adjust the output voltage, refer to the datasheet for the appropriate resistor values.
Thermal Considerations:
- Ensure adequate heat dissipation by mounting the LM2575HVS-5.0 on a heatsink or a large copper area on the PCB.
- Monitor the temperature to avoid exceeding the thermal shutdown threshold (160°C).
PCB Layout:
- Keep the traces from the input and output capacitors to the LM2575HVS-5.0 as short as possible to minimize parasitic inductance and improve stability.
- Use wide traces for power paths to reduce resistance and power loss.
Power-On Sequence:
- Ensure the input voltage rises smoothly and reaches the minimum operating voltage (7.0 V) before the load is applied.
- Avoid sudden changes in input voltage to prevent transient issues.
Testing and Troubleshooting:
- Measure the output voltage to ensure it is within the specified range (5.0 V ± 0.05%).
- Check the ripple and noise on the output using an oscilloscope.
- Verify that the quiescent current is within the expected range (5.0 mA).
By following these guidelines, you can ensure reliable operation of the LM2575HVS-5.0 in your application.
(For reference only)Inquiry - LM2575HVS-5.0
