XL6009 DC-DC Buck-Boost Converter Module | ATMOSFÆR ENGINEERING

Adjustable step-up/step-down voltage regulator module based on the XL6009 switching controller. Capable of both boosting and bucking voltages with high efficiency up to 94%. Features onboard potentiometer for easy output voltage adjustment from 1.25V to 40V. Ideal for solar power systems, battery-powered projects, automotive applications, and any situation requiring stable voltage conversion from variable input sources.

Technical Specifications:

• IC: XL6009 Buck-Boost Controller
• Input Voltage Range: 3.8V - 32V DC
• Output Voltage Range: 1.25V - 40V DC (adjustable via potentiometer)
• Maximum Input Current: 3A
• No-Load Current: ~18mA @ 5V input, 8V output (increases with higher voltage)
• Conversion Efficiency: Up to 94% (efficiency decreases with larger voltage differentials)
• Switching Frequency: 400kHz
• Load Regulation: ±0.5%
• Line Regulation: ±0.5%
• Operating Temperature: -40°C to +85°C
• Short Circuit Protection: None (external fuse recommended)
• Dimensions: ~43mm x 21mm x 14mm (typical, may vary)
• PCB Type: High-quality FR4 with heatsink area

Features:

• Wide input/output voltage range
• High efficiency switching regulation
• Onboard LED power indicator
• Easy adjustment via multi-turn potentiometer
• Compact PCB design
• Both step-up (boost) and step-down (buck) operation
• Suitable for continuous operation

Applications:

• Solar panel voltage regulation and MPPT systems
• Automotive voltage stabilization (12V/24V systems)
• Battery charging circuits
• Wind power generation voltage regulation
• Variable input power supply applications
• DIY power banks and portable power systems
• LED driver circuits
• Embedded systems requiring stable voltage from unstable sources

Important Notes:

• Output current capacity depends on input voltage, output voltage, and load resistance
• No built-in short circuit protection - use external fuse on input for safety
• Ensure adequate ventilation or heatsinking for high-power applications
• Adjustment: Turn potentiometer clockwise to increase voltage, counter-clockwise to decrease

Compatible with solar panels, batteries, automotive power systems, and general DC power applications. Recommended for projects requiring flexible voltage conversion with good efficiency.