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Mudule
DC-DC Step Down Converter
$4.50
In Stock (10 available)
A DC-DC Step Down Converter, also known as a buck converter, is an electronic circuit used to reduce a higher DC voltage to a lower, stable DC voltage. It’s widely used in electronics where different components require different voltage levels.
What It Does:
- Takes input voltage (e.g., 12V) and converts it to a lower output voltage (e.g., 5V, 3.3V).
- Maintains high efficiency (>85%) by using switching regulation instead of resistive dropping.
Common Specs:
| Feature | Typical Value / Range |
|---|---|
| Input Voltage | 4V – 40V (varies by model) |
| Output Voltage | 1.25V – 36V (adjustable) |
| Current Output | 1A to 10A+ (model-dependent) |
| Efficiency | 85–95% |
| IC Example | LM2596, XL4015, MP1584, etc. |
Types:
1. Adjustable Voltage (with Potentiometer):
- Rotate a screw to set output voltage
- Example: LM2596 module (very popular)
2. Fixed Output Voltage:
- Pre-set to 5V, 3.3V, etc.
- Often used to power microcontrollers
3. Display Version:
- Built-in voltmeter shows input/output voltages
Applications:
- Power Arduino, ESP32, Raspberry Pi, etc.
- Battery-powered projects (step down 12V to 5V)
- DIY power banks
- RC vehicles, LED strips, fan control
- Solar panels and Li-ion charging circuits
How to Use:
- Connect Input: VIN to your power source (+), GND to negative
- Connect Output: VOUT to your device
- Adjust output using a screwdriver on the onboard potentiometer (if adjustable)
- Use a multimeter to confirm output before connecting to sensitive devices
Tips:
- Don’t exceed the input voltage range
- Add a heatsink or fan for high-current applications
- Ensure correct polarity — wrong wiring can damage the module