5A XL4015 DC-DC Step Down Buck Converter Module Power Supply LED Lithium Charger (RED)

Module Overview:

The XL4015 E1 Red Module is an efficient and popular 5 A DC-DC converter that steps higher input DC voltages down to a controlled lower voltage with adjustable current limits. It’s widely used in hobbyist and industrial power applications, including LED driving, power supplies, and battery charging, featuring high efficiency and built-in protections.

Features & Capabilities:

Constant Current / Constant Voltage (CC/CV) Control
You can adjust both output voltage and output current limits with onboard potentiometers — useful for charging batteries or driving LEDs.

Multiple Protection Functions
Includes:

• Current limiting and short-circuit protection

• Thermal shutdown protection

• Power LED status indicators
  (LEDs vary by board design)

Status LEDs
Typical boards have LEDs to indicate:

• Power present

• Load connected

• Constant current mode active
  (Colors and exact function depend on PCB design)

Versatile Applications
Can serve as:

• Adjustable lab power supply

• LED driver (constant current mode)

• CC/CV battery charger (Li-ion, LiPo etc.)

• General step-down voltage regulator

Typical Use & Notes

• Input must always be higher than output for proper buck conversion.
• Heat sink or airflow is recommended when approaching the ~5 A limit.
• Reverse polarity protection is not always included — add protection externally if needed.
• Adjust voltage before connecting sensitive electronics.