J5019 Module
The J5019 Module is a high-efficiency DC-DC buck converter that provides adjustable constant voltage (CV) and constant current (CC) output, making it perfect for battery charging, LED lighting, and regulated power applications.
With its built-in LED voltmeter display, you can easily monitor input/output voltage in real time, ensuring safe and precise operation for your Arduino, Raspberry Pi, and other electronics projects.
🔹 Key Features
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Wide Input Range: Supports 5 V–32 V DC input.
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Adjustable Output Voltage & Current: Fine-tune voltage from 1.25 V up to 30 V and current up to 3 A.
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Constant Current Mode: Ideal for lithium battery charging and LED driving.
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High Efficiency: Up to 95% conversion efficiency.
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LED Display: Integrated voltmeter shows input/output voltage for quick monitoring.
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Short Circuit & Over-Temperature Protection: Ensures safe, reliable operation.
🔹 Technical Specifications
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Input Voltage: 5 V–32 V DC
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Output Voltage: 1.25 V–30 V DC (adjustable)
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Output Current: Up to 3 A (recommended ≤2.5 A continuous)
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Output Power: Up to 35 W (with adequate heat dissipation)
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Conversion Efficiency: Up to 95%
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Voltage Display Accuracy: ±0.1 V
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Switching Frequency: ~150 kHz
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Dimensions: ~60 mm × 26 mm × 14 mm
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Operating Temperature: –20 °C to +85 °C
🔹 Applications & Use Cases
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DIY Bench Power Supply: Create a compact adjustable power source for electronics testing.
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Battery Charging: Perfect for lithium-ion, LiFePO4, or lead-acid battery charging with current limiting.
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LED Drivers: Provide constant current to high-power LEDs.
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Arduino & Raspberry Pi Projects: Power sensitive circuits requiring stable voltage.
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IoT Devices: Pair with NodeMCU or Arduino and Accessories for smart regulated supplies.
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Solar Power Systems: Step down solar panel output to safe levels for charging batteries.
🔹 Advantages for Makers & Engineers
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Built-in voltmeter simplifies setup and monitoring.
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Compact, lightweight design fits easily in enclosures.
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High efficiency reduces heat and energy loss.
🔹 Safety & Precautions
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Ensure proper heat sinking for loads above 2 A.
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Avoid reverse polarity to prevent module damage.
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Adjust current limit before connecting sensitive batteries or LEDs.
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Keep module dry and away from conductive debris to avoid short circuits.
🔗 Helpful Internal Links
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Browse Electronics Components for additional circuit parts.
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Explore Tools and Accessories for soldering and assembly needs.
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See Power Supply for related modules.
🎥 Video Tutorial
📝 Product Summary
The J5019 DC-DC buck converter delivers adjustable constant voltage and current with a built-in voltmeter display, making it an excellent solution for battery charging, LED drivers, Arduino/Raspberry Pi power regulation, and custom power supplies.
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