XL4015 5A CC/CV Buck Converter Module – Adjustable 1.25–35 V, LED Driver / Li-ion Charger - RS196

Description:

The XL4015 CC/CV Buck Converter Module is a high-performance adjustable step-down (buck) power supply, capable of delivering up to 5 A in constant current mode and regulating voltage from 1.25 V to ~35 V. This versatile module is ideal for applications such as LED driving, lithium battery charging, bench power supplies, and embedded electronics projects.

Built with protection features and high efficiency, this module offers reliable performance for makers, engineers, and hobbyists.

Specifications:

• Input Voltage Range: 4-38V
• Output Voltage Range: 1.25-36V Continuously Adjustable
• Output Current: Adjustable, up to 5A
• Output Power: up to 75W
• Working Temperature: -40 ~ + 85 °C
• Working Frequency: 180KHz
• Conversion Efficiency: up to 96%
• Rectification Method: Asynchronous Rectifier

Features:

• Adjustable output voltage from 1.25 V up to ~35 V (depending on input)
• 5 A constant current capability (peak) with current limiting, ideal for driving LEDs or charging batteries
• Wide input range (typical 4 V – 38 V)
• Built-in thermal shutdown, short-circuit protection, and overcurrent control 
• High efficiency up to ~ 96 % under optimal conditions
• Screw terminal inputs/outputs for easy wiring
• Dual potentiometers for independent voltage and current setting
• Compact and robust PCB design

Applications:

• LED / high power LED driver (constant current)
• Lithium / Li-ion battery charging (CC + CV modes)
• Bench power supply / variable lab supply
• Voltage regulation for microcontrollers, sensors, robotics
• Embedded systems, hobby electronics

Usage Tips / Best Practices:

• Set voltage before connecting load — first adjust output voltage (with no load), then set current limit.
• Select correct input voltage — input must always be higher than desired output (minimum dropout ~0.3 V)
• Cooling & heat dissipation — at high currents, module and components may heat; mount heatsink or ensure airflow.
• Short / overcurrent protection — the module reduces switching frequency under short to protect itself
• Use filter capacitors / bypassing as needed on input and output for cleaner voltage.
• Observe wiring polarity — wrong polarity can damage module.

Package Included:

• 1 x XL4015 CC/CV Buck Converter XL4015 5A Constant Current / Voltage LED Drives Lithium Battery Charging Module