🔋 XL4015 5A DC Buck Converter — CC/CV Step-Down Module with USB & Meter
Compact DC-DC buck converter based on the XL4015, designed for adjustable constant voltage (CV) and constant current (CC) output in charging, LED driving, bench testing, and general-purpose DC power regulation. This module combines a practical digital meter, screw-terminal connections, and a convenient USB output port in one versatile board for DIY and electronics work.
It is a strong fit for users who need a compact adjustable step-down power module for battery charging, LED / laser current driving, solar power regulation, or a simple lab-style DC source for testing and development.
🔧 Key Features
⚡ CC / CV Operation: supports both constant current and constant voltage output modes
📉 Step-Down Conversion: input voltage must be at least 2V higher than the output voltage
🖥️ Built-In Digital Meter: displays input voltage, output voltage, output current, and output power
🔌 USB Output Included: convenient output connection for compatible loads
🎛️ Adjustable Voltage & Current: onboard potentiometers let you set the output to your needs
📏 Wide DC Input Range: accepts 5V–36V DC
🚀 High Efficiency: up to 96% under suitable conditions
🛡️ Built-In Protection: thermal shutdown, current limit, and output short protection
🔩 Mounting Hardware Included: comes with standoffs and nuts for easier installation
🆚 What This Module Is / Is Not
What it is:
A practical adjustable DC buck converter for charging, LED driving, and regulated low-voltage output projects.
What it is not:
It is not a boost converter, not an AC power supply, and not a fixed 5V USB charger unless you manually set the output to 5V first.
⚙️ Shared Features
Main IC: XL4015 buck regulator platform
Control Type: constant current / constant voltage adjustable output
Meter Functions: IN voltage, OUT voltage, current, power
Output Connections: screw terminals and USB output
Use Cases: battery charger, LED driver, current source, solar regulator, bench supply
📐 Key Specifications
Input Voltage Range: 5V–36V DC
Output Voltage Range: 1.2V–34V DC adjustable
Step-Down Requirement: input must be at least 2V higher than output
Output Current: 0A–5A peak, 4A continuous
Output Power: 75W max
Operating Frequency: 180KHz
Efficiency: up to 96%
Voltmeter Range: 1.2V–40.0V, 0.1V resolution
Current Meter Range: 0.00A–5.00A, 0.01A resolution
Power Meter Range: 0.0W–99.9W, 0.1W resolution
Dimensions: 6.6 × 3.9 × 1.8 cm / 2.6 × 1.5 × 0.7 in (including standoffs)
🧠 Quick Selection Guide
Need an adjustable battery charger? This module is a strong fit because it supports CC/CV charging.
Need to drive LEDs or laser diodes? Use it as a constant-current driver after setting the correct voltage and current.
Need a fixed 5V USB output? You must manually set the module output to 5V before using the USB port.
Need a converter that can raise voltage? Choose a boost or buck-boost module instead.
🔋 Battery Charger Use
Set the output voltage to the correct charge / float voltage for your battery type before connecting the battery.
Set the output current limit by shorting the output through a jumper/wire during setup and adjusting the current potentiometer.
During charging, the current gradually drops as the battery approaches full charge.
This module can be adapted for many battery chemistries when the correct voltage and current are configured carefully.
💡 LED / Laser Driver Use
Set the correct maximum output voltage and current limit before connecting the LED or laser load.
Multiple LEDs may be connected if the total voltage and current stay within the module’s real operating limits.
Always configure the module first, then connect the load.
🧰 Typical Uses
Battery charging projects
LED constant-current driving
Laser diode driving
Solar panel output regulation
DIY lab / bench DC source
General low-voltage electronics testing
🔌 Wiring & Safety
Use DC input only; do not connect to AC mains.
Because this is a buck converter, the input voltage must remain higher than the desired output voltage.
The USB connector carries the module’s output voltage, not a guaranteed fixed 5V unless you set it to 5V yourself.
Always set the output voltage and current before connecting sensitive loads, batteries, LEDs, or USB-powered equipment.
For best efficiency, the output voltage should usually be around 80% of the input voltage.
Operation above about 2A continuous may require extra cooling, heatsinking, or forced airflow.
⚠️ Important Notes
The module input and output should be isolated from ground.
This board is intended for users who understand safe DC setup and adjustment.
The real continuous-current capability depends on cooling, ambient temperature, and installation conditions.
Improper setup may damage batteries, LEDs, laser diodes, USB devices, or the module itself.
📦 Package Includes
1 × Step-down Buck CC/CV Battery Charger / LED Driver with Meter
4 × Mounting Standoffs and Nuts
💥 Volume Discount — Buy More & Save
• 10% OFF when you buy 2 units
• 15% OFF when you buy 3 units
• 20% OFF when you buy 4 or more units
Discount auto-applied.
🇺🇸 Premium Support & Shipping
• US Stock / Fast Shipping — 2–4 day delivery from Oklahoma, USA. Your purchase supports a US-based small business.
• 🧪 Quality Checked & Tested — spot-checked before shipping.
• 🔁 Easy Returns — 30-day returns; we pay return shipping.
• 📦 Professional Packaging — safe delivery, 100% guaranteed.
Compact DC-DC buck converter based on the XL4015, designed for adjustable constant voltage (CV) and constant current (CC) output in charging, LED driving, bench testing, and general-purpose DC power regulation. This module combines a practical digital meter, screw-terminal connections, and a convenient USB output port in one versatile board for DIY and electronics work.
It is a strong fit for users who need a compact adjustable step-down power module for battery charging, LED / laser current driving, solar power regulation, or a simple lab-style DC source for testing and development.
🔧 Key Features
⚡ CC / CV Operation: supports both constant current and constant voltage output modes
📉 Step-Down Conversion: input voltage must be at least 2V higher than the output voltage
🖥️ Built-In Digital Meter: displays input voltage, output voltage, output current, and output power
🔌 USB Output Included: convenient output connection for compatible loads
🎛️ Adjustable Voltage & Current: onboard potentiometers let you set the output to your needs
📏 Wide DC Input Range: accepts 5V–36V DC
🚀 High Efficiency: up to 96% under suitable conditions
🛡️ Built-In Protection: thermal shutdown, current limit, and output short protection
🔩 Mounting Hardware Included: comes with standoffs and nuts for easier installation
🆚 What This Module Is / Is Not
What it is:
A practical adjustable DC buck converter for charging, LED driving, and regulated low-voltage output projects.
What it is not:
It is not a boost converter, not an AC power supply, and not a fixed 5V USB charger unless you manually set the output to 5V first.
⚙️ Shared Features
Main IC: XL4015 buck regulator platform
Control Type: constant current / constant voltage adjustable output
Meter Functions: IN voltage, OUT voltage, current, power
Output Connections: screw terminals and USB output
Use Cases: battery charger, LED driver, current source, solar regulator, bench supply
📐 Key Specifications
Input Voltage Range: 5V–36V DC
Output Voltage Range: 1.2V–34V DC adjustable
Step-Down Requirement: input must be at least 2V higher than output
Output Current: 0A–5A peak, 4A continuous
Output Power: 75W max
Operating Frequency: 180KHz
Efficiency: up to 96%
Voltmeter Range: 1.2V–40.0V, 0.1V resolution
Current Meter Range: 0.00A–5.00A, 0.01A resolution
Power Meter Range: 0.0W–99.9W, 0.1W resolution
Dimensions: 6.6 × 3.9 × 1.8 cm / 2.6 × 1.5 × 0.7 in (including standoffs)
🧠 Quick Selection Guide
Need an adjustable battery charger? This module is a strong fit because it supports CC/CV charging.
Need to drive LEDs or laser diodes? Use it as a constant-current driver after setting the correct voltage and current.
Need a fixed 5V USB output? You must manually set the module output to 5V before using the USB port.
Need a converter that can raise voltage? Choose a boost or buck-boost module instead.
🔋 Battery Charger Use
Set the output voltage to the correct charge / float voltage for your battery type before connecting the battery.
Set the output current limit by shorting the output through a jumper/wire during setup and adjusting the current potentiometer.
During charging, the current gradually drops as the battery approaches full charge.
This module can be adapted for many battery chemistries when the correct voltage and current are configured carefully.
💡 LED / Laser Driver Use
Set the correct maximum output voltage and current limit before connecting the LED or laser load.
Multiple LEDs may be connected if the total voltage and current stay within the module’s real operating limits.
Always configure the module first, then connect the load.
🧰 Typical Uses
Battery charging projects
LED constant-current driving
Laser diode driving
Solar panel output regulation
DIY lab / bench DC source
General low-voltage electronics testing
🔌 Wiring & Safety
Use DC input only; do not connect to AC mains.
Because this is a buck converter, the input voltage must remain higher than the desired output voltage.
The USB connector carries the module’s output voltage, not a guaranteed fixed 5V unless you set it to 5V yourself.
Always set the output voltage and current before connecting sensitive loads, batteries, LEDs, or USB-powered equipment.
For best efficiency, the output voltage should usually be around 80% of the input voltage.
Operation above about 2A continuous may require extra cooling, heatsinking, or forced airflow.
⚠️ Important Notes
The module input and output should be isolated from ground.
This board is intended for users who understand safe DC setup and adjustment.
The real continuous-current capability depends on cooling, ambient temperature, and installation conditions.
Improper setup may damage batteries, LEDs, laser diodes, USB devices, or the module itself.
📦 Package Includes
1 × Step-down Buck CC/CV Battery Charger / LED Driver with Meter
4 × Mounting Standoffs and Nuts
💥 Volume Discount — Buy More & Save
• 10% OFF when you buy 2 units
• 15% OFF when you buy 3 units
• 20% OFF when you buy 4 or more units
Discount auto-applied.
🇺🇸 Premium Support & Shipping
• US Stock / Fast Shipping — 2–4 day delivery from Oklahoma, USA. Your purchase supports a US-based small business.
• 🧪 Quality Checked & Tested — spot-checked before shipping.
• 🔁 Easy Returns — 30-day returns; we pay return shipping.
• 📦 Professional Packaging — safe delivery, 100% guaranteed.
