XL4015 Charger

⚡ XL4015 Adjustable DC-DC Buck Converter Module

The XL4015 module is a high-efficiency step-down (buck) voltage regulator capable of converting higher DC voltages into a lower, stable DC output.

Ideal for battery charging, LED drivers, DIY electronics projects, and motor control.

Provides adjustable output voltage and current using onboard potentiometers.

Features over-current, over-temperature, and short-circuit protection, making it safe for sensitive electronics.

Can handle up to 5A output current continuously (with proper heat dissipation).

✨ Key Features

✅ Adjustable output voltage: 1.25V – 36V
✅ Adjustable output current: up to 5A
✅ High efficiency: up to 96%
✅ Over-current, over-temperature, and short-circuit protection
✅ LED display (optional modules) for voltage/current readout
✅ Compact, easy-to-use module
✅ Perfect for DIY chargers, power supplies, and electronics projects

📊 Technical Specifications
Parameter Typical Value
Input Voltage 4V – 38V DC
Output Voltage 1.25V – 36V DC
Output Current 0 – 5A (continuous with heat sink)
Switching Frequency 180 kHz
Efficiency 96% (typical)
Ripple Voltage <50 mV
Load Regulation ±1%
Line Regulation ±0.5%
Protections Overcurrent, short-circuit, thermal shutdown
Operating Temperature −40°C to +85°C
Size ~55 × 21 × 14 mm
📍 Pin Configuration (Common 4-Pin XL4015 Module)
Pin Function
VIN+ Positive input voltage (DC source)
VIN- Ground input
VOUT+ Positive output voltage
VOUT- Ground output

⚠️ Always connect VIN and VOUT correctly to avoid damaging the module.

🔧 Adjustment

Voltage Adjustment Potentiometer (V-Adj) → sets output voltage

Current Adjustment Potentiometer (I-Adj / CC) → sets max output current for constant-current mode

Example:

Charging Li-ion battery → Set voltage = battery nominal voltage (e.g., 12.6V for 3S Li-ion)

Adjust current → Set to safe charging current (e.g., 2A)

🔌 Applications

Perfect for:

🔋 Adjustable Li-ion / Lead-acid battery chargers

💡 LED drivers & lighting

⚙️ DIY regulated power supplies

🛠️ Arduino, ESP32, Raspberry Pi projects requiring stable voltage

🔧 Motor or servo drivers requiring controlled voltage/current

⭐ Quick Summary

👉 Type: Adjustable DC-DC Buck Converter
👉 Voltage: 1.25 – 36V
👉 Current: 0 – 5A
👉 Efficiency: Up to 96%
👉 Protection: Overcurrent / Thermal / Short
👉 Best for: DIY power supplies, chargers, and electronics projects