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Specifications
SKU: 8640457
| Parameter | Description | Value |
|---|---|---|
| Part Number | Part number of the device | LM2576T-12 |
| Manufacturer | Manufacturer of the device | HTC KOREA TAEJIN TECH |
| Package Type | Package type of the device | TO-220 |
| Function | Function of the device | Step-down DC-DC converter |
| Input Voltage Range | Range of input voltage that the device can handle | 4.5V to 40V |
| Output Voltage | Fixed output voltage of the device | 12V |
| Output Current | Maximum continuous output current | 3A |
| Switching Frequency | Frequency at which the internal switch operates | 52kHz |
| Efficiency | Typical efficiency of the converter | Up to 84% |
| Operating Temperature | Temperature range for operation | -40°C to +125°C |
| Storage Temperature | Temperature range for storage | -65°C to +150°C |
| Quiescent Current | Current consumed by the device when no load is present | 5mA (typical) |
| Output Ripple Voltage | Typical output ripple voltage | 100mV (peak-to-peak) |
| Thermal Resistance | Thermal resistance from junction to ambient | 50°C/W |
| Protection Features | Protection features included in the device | Overcurrent protection, thermal shutdown |
| Pin Configuration | Pin configuration of the device | Vin, GND, Vout, Feedback, On/Off |
Instructions for Use
Circuit Design:
- Ensure the input voltage is within the specified range (4.5V to 40V).
- Connect the input voltage to the Vin pin and ground to the GND pin.
- Connect the output voltage to the Vout pin and ground to the GND pin.
- Use a feedback resistor network to set the output voltage if using an adjustable version.
Component Selection:
- Choose input and output capacitors with appropriate ratings to ensure stable operation.
- Use a Schottky diode for the output stage to minimize losses.
- Select an inductor with a suitable inductance value and current rating.
Layout Considerations:
- Keep the input and output capacitors as close as possible to the respective pins to minimize parasitic inductance.
- Use wide traces for power paths to reduce resistance and heating.
- Ensure proper heat dissipation by providing adequate copper area or a heatsink.
Testing:
- Before finalizing the design, test the circuit under various load conditions to ensure stability and performance.
- Measure the output voltage, ripple, and efficiency to verify that they meet the required specifications.
Safety Precautions:
- Always use appropriate safety equipment when handling high voltages.
- Ensure the device is properly grounded to prevent electrical hazards.
- Follow all manufacturer guidelines and datasheet recommendations for safe operation.
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