5A CC/CV Adjustable Step-Down Buck Converter Module with LED Display
5A CC/CV Adjustable Step-Down Buck Converter Module with LED Display
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Short Product Description
Short Product Description
Need precise voltage and current control for your electronics projects? This 5A Constant Current/Constant Voltage (CC/CV) step-down module features a built-in LED display, allowing you to monitor power output without a multimeter. Protected by a durable clear acrylic case, it is the perfect 3-in-1 solution for stepping down voltage, charging lithium batteries, and driving high-power LEDs safely and efficiently.
Key Features
Key Features
- Real-Time LED Monitoring: Built-in digital display shows voltage, current, and power simultaneously, eliminating the need for external measurement tools.
- 3-in-1 Versatility: Functions seamlessly as a standard voltage regulator, a multi-chemistry battery charger (Lithium, Lead-acid, NiMH), and a high-power LED driver.
- Self-Calibrating Interface: Integrated calibration mode allows you to fine-tune the display accuracy for precise voltage and current management.
- Robust Protection Mechanisms: Features built-in short-circuit protection and thermal shutdown to keep your connected devices and the module safe.
- Protective Acrylic Shell: Comes with a durable, transparent enclosure that prevents accidental short circuits while maintaining a sleek, technical look.
- High-Efficiency Output: Delivers up to 96% conversion efficiency at 180KHz, minimizing heat generation during standard operation.
Full Product Description
Full Product Description
The Ultimate 3-in-1 Power Management Solution
Whether you are building a custom solar setup, designing a test bench, or creating DIY lighting, reliable power regulation is critical. This 5A adjustable step-down buck converter is engineered to provide stable, clean power with an impressive conversion efficiency of up to 96%. It operates flawlessly in three distinct modes: as a standard step-down module with over-current protection, as a highly adaptable battery charger, and as a constant-current LED driver.
Built-In Precision and Monitoring
Say goodbye to the hassle of connecting external multimeters. The integrated digital LED screen provides real-time, highly accurate readings of your voltage, current, and power output. With its self-calibration feature, you can ensure your measurements remain precise over the module's entire lifespan. The onboard USB interface adds a layer of convenience for testing USB-powered devices (please note: the USB output mirrors the module's current voltage setting; it is not a fixed 5V output).
Engineered for Safety and Durability
Working with power requires robust safety measures. This module is equipped with comprehensive short-circuit and over-temperature protections, automatically shutting down output if thermal limits are exceeded. The included clear acrylic shell not only gives your project a clean, professional aesthetic but also protects the delicate PCB components from accidental shorts and environmental debris.
Technical Specifications
Technical Specifications
- Input Voltage: 5V – 36V DC
- Output Voltage: 1.25V – 32V DC (continuously adjustable)
- Output Current: Max 5A (continuous use recommended under 4.5A)
- Output Power: Max 75W (recommended under 50W; extra cooling required above 35W)
- Conversion Efficiency: Up to 96%
- Operating Frequency: 180 kHz
- Operating Temperature: -40°C to +85°C
- Dimensions: Standard footprint (clear case included)
- Protections: Short-circuit, over-temperature (no reverse polarity protection)
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
Q: Can I use the USB port to charge my smartphone safely?
A: You can, but only if you manually adjust the output voltage to exactly 5V first. The USB port shares the exact same voltage as the main output terminals. Plugging a phone in while the module is set to 12V will severely damage your device. Always verify the voltage on the LED screen before connecting USB electronics.
Q: I am turning the voltage knob, but the display isn't changing. Is it broken?
A: No, this is a very common scenario. The factory default output voltage is set to approximately 17V. If your input voltage is lower than this, the display won't change immediately. Simply rotate the voltage potentiometer (the blue box with the brass screw) counter-clockwise for about 10 to 15 full turns until the voltage begins to drop.
Q: Do I need to add a heatsink or a fan to this module?
A: The module includes a small, pre-attached heatsink that is sufficient for most applications. However, if you plan to draw more than 3A of continuous current, or exceed 35W of total power output, we strongly recommend adding active cooling (a small fan) or a larger heatsink to prevent thermal shutdown.
Target Users / Applications
Target Users / Applications
- DIY Electronics Hobbyists: For custom lab bench power supplies and breadboard prototyping.
- Renewable Energy Enthusiasts: Ideal for stepping down solar panel or wind turbine voltage to charge battery banks safely.
- Lighting Technicians & Makers: Perfect for driving high-power custom LED arrays requiring strict constant-current regulation.
- STEM Educators & Students: A practical, visual tool for teaching voltage regulation, current limiting, and basic power electronics.
