XL4015 5A Step-Down DC-DC Converter with Voltage and Current Adjustment – CC CV 1.25V–36V Module for LED Battery Charging

XL4015 DC-DC Step-Down Voltage Converter 5A

The XL4015 module is a high-efficiency DC-DC step-down converter with an adjustable output between 1.25V and 36V and a current of up to 5A (recommended max. 4.5A for durability). It supports voltage (CV) and current (CC) adjustment, making it ideal for battery charging or powering LEDs.

Technical Features

• DC-DC step-down (buck) converter based on the XL4015 chip
• Input voltage: 4V – 38V DC (do not exceed 38V)
• Output voltage: 1.25V – 36V DC (continuously adjustable)
• Output current: up to 5A (recommended max. 4.5A)
• Maximum power: 75W
• Efficiency: up to 96%
• Independent CV and CC adjustment – ideal for sensitive applications
• Short-circuit protection: automatic limitation at 8A
• Thermal protection: shuts down automatically at high temperatures
• Operating frequency: 180KHz
• Operating temperature: -40°C ~ +85°C
• Dimensions: 51 x 26 x 18 mm
• LED operation indicator

Important Notes

• When charging batteries, the module initially operates in CC (constant current) mode for protection
• If the output voltage does not change, turn the potentiometer counterclockwise at least 10 times – a common calibration method
• The initial output voltage is ~20V – it can be adjusted after installation

Recommended Applications

• Battery chargers for Li-ion, NiMH
• LED power supply
• Adjustable laboratory power supplies
• Voltage reduction: 24V → 12V, 12V → 5V, etc.
• DIY projects, automotive electronics, industrial systems

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