XL4015 DC-DC Step-Down 1.25-35V 5A CC/CV Buck Converter

Product description: XL4015 DC-DC Step-Down Converter

Efficient DC-DC step-down converter based on the XL4015 IC. The device effectively steps down voltage, supporting input voltage in the range 4 - 38 V DC and output 1.25 - 35 V DC. The module provides smooth voltage (CV) and current limiting (CC) adjustment via built-in multi-turn potentiometers. Maximum output current is 5 A. The converter has built-in thermal and short-circuit protection, with efficiency up to 95% at a switching frequency of 300 kHz. The module works excellently in microcontroller projects-for Arduino, ESP8266, ESP32, and Raspberry Pi.

For correct converter operation, the IN input voltage must be at least 1.5 V higher than the set OUT output voltage.

Key technical specifications

• Input voltage: 4 - 38 V
• Output voltage: 1.25 - 35 V
• Output current: maximum 5 A (75 W)-above 3 A additional cooling is required
• Output current regulation: 0.2 - 5 A
• Efficiency: up to 95%
• Switching frequency: 300 kHz
• Operating temperature: from -40 ℃ to 85 ℃
• Status indication: three LEDs
• Dimensions: 62 x 26 x 15 mm

Example applications

• Powering electronic circuits and microcontroller modules
• Powering high-power LEDs
• Charging rechargeable battery cells
• Building workshop bench power supplies
• Stepping down voltage in backup power systems

Benefits

• Smooth and precise voltage and current regulation thanks to multi-turn potentiometers
• High current capability up to 5 A for powering demanding circuits
• Built-in thermal and short-circuit protection for safer operation
• High energy efficiency up to 95%, reducing heat losses
• Compact dimensions for easy mounting in small enclosures