XL4015 5A CC CV Adjustable Buck Converter 4-38V Step Down Charger Module

🔧 XL4015 5A CC CV Adjustable Buck Converter Charger Module | AuscomTech

This XL4015 module is a high-current DC-DC buck converter designed to step down a DC input voltage to a lower adjustable output.

It supports constant voltage and constant current adjustment, making it suitable for regulated power supply, battery charging, current limiting, and LED driver applications.

Typical use includes DIY bench power supplies, lithium battery charging setups, solar charging projects, LED lighting, robotics, Arduino, ESP32, and Raspberry Pi power conversion.

⭐ Key Features

• Adjustable Buck Conversion – steps down DC input voltage to a lower adjustable output for power supply projects.
• CC/CV Control – constant current and constant voltage adjustment for charging, LED driving, and load protection.
• 5A Output Capability – suitable for higher-current applications when correctly adjusted and cooled.
• Battery Charging Use – can be set for charging lithium batteries and other rechargeable packs within supported limits.
• Current Limit Function – helps prevent excessive output current when powering sensitive loads.
• High Efficiency Design – switching regulator design with efficiency up to 96% under suitable conditions.
• Onboard Status LEDs – indicators help show charging, full, constant current, and constant voltage states.

📊 Technical Specifications

• Controller IC: XL4015
• Input Voltage: DC 4–38V
• Output Voltage: DC 1.25–36V adjustable
• Output Current: adjustable, up to 5A
• Output Power: up to 75W
• Operating Modes: constant voltage / constant current
• Switching Frequency: 180kHz
• Conversion Efficiency: up to 96%
• Short Circuit Protection: yes, current limited
• Over Temperature Protection: yes, automatic shutdown
• Reverse Input Protection: none
• Connection Method: screw terminals or solder pads
• Mounting Method: 4 × 3mm mounting holes
• Operating Temperature: -40°C to +85°C
• Module Size: approx. 61.5 × 26 × 26mm
• Weight: approx. 19.1g

🧩 Typical Applications

• Adjustable DC power supply builds
• Lithium battery charging projects
• Solar panel charging systems
• High-power LED constant current driving
• Current-limited electronics testing
• Robotics and automation power regulation
• Arduino, ESP32, and Raspberry Pi projects

⚠️ Important Notes

• Input voltage must be higher than the required output voltage.
• Do not connect input ground and output ground together externally, as this can bypass current sensing and prevent correct current regulation.
• Additional cooling is recommended when operating above 3A or 35W.
• Reverse polarity protection is not built in; check input wiring before applying power.
• Always adjust output voltage and current before connecting batteries, LEDs, or sensitive electronics.
• Battery charging requires correct settings for the battery chemistry, voltage, and capacity.

📦 Package Includes

• 1 × XL4015 5A CC CV Adjustable Buck Converter Charger Module

🔗 Recommended Accessories (Not Included)

• Digital multimeter – set output voltage and current accurately
• DC power supply – provide stable input power
• Heatsink or cooling fan – improve performance at higher loads
• Terminal leads – secure wiring into projects