📋 Overview
The XL6009 is a versatile, high-efficiency step-up (boost) DC-DC converter module that accepts an input voltage from 5V to 32V and boosts it to an adjustable output of 6V to 48V. Based on the second-generation XL6009 chip, it delivers superior performance and higher efficiency compared to older first-generation LM2577-based solutions.
The module features clearly labeled solder pads for input (IN+ / IN−) and output (OUT+ / OUT−) connections, along with an onboard multi-turn potentiometer for precise output voltage adjustment. Its compact form factor and wide voltage range make it a great fit for battery-powered projects, LED drivers, motor power supplies, and many other applications where you need a higher voltage than your source provides.
⚠️ Important: This is a boost (step-up only) converter — the output voltage must always be at least 1.5V higher than the input voltage. Do not exceed 32V input or 48V output. This module does not include short-circuit protection — always install a fuse or protection circuit on the input side.
⭐ Key Features
- Wide Input Range: Accepts 5V to 32V DC input (functional down to 3V with reduced performance)
- Adjustable Output: Output voltage continuously adjustable from 6V to 48V via onboard potentiometer
- High Efficiency: MOSFET switching enables efficiency up to 94%, depending on input/output voltage and load current
- High Switching Frequency: 400KHz operation provides low output ripple and fast transient response
- Generous Current Capacity: Supports up to 4A input current and 2.5A output current (max)
- Compact Design: Small PCB footprint (approximately 43 × 21 × 14 mm) fits easily into tight enclosures
- Industrial Temperature Range: Rated for operation from −40°C to +85°C
📊 Specifications
| Converter Type | Non-isolated Step-Up (Boost) |
| IC Chip | XLSEMI XL6009 (2nd generation) |
| Input Voltage | 5V – 32V DC (functional from 3V) |
| Output Voltage | 6V – 48V DC (continuously adjustable) |
| Input Current | 4A max (no-load ~18mA) |
| Output Current | 2.5A max |
| Output Power | 15W (natural cooling) / 25W (with heatsink) |
| Conversion Efficiency | Up to 94% (varies with Vin, Vout, and load) |
| Switching Frequency | 400KHz |
| Voltage Regulation | ±0.5% |
| Load Regulation | ±0.5% |
| Output Ripple | ~50mV (increases with higher voltage and current) |
| Short Circuit Protection | None — install external fuse or protection circuit |
| Operating Temperature | −40°C to +85°C (derate above 40°C ambient) |
| Full-Load Temp Rise | ~45°C |
| Board Dimensions | Approx. 43×21×14 mm (1.7 × 0.83 × 0.55 in) L×W×H |
📌 Pinout
The XL6009 boost converter module has four clearly labeled solder pads — two for input and two for output:
| IN+ | Positive input — connect to the positive terminal of your DC power source |
| IN− | Negative input (ground) — connect to the negative terminal of your DC power source |
| OUT+ | Positive output — connect to the positive terminal of your load |
| OUT− | Negative output (ground) — connect to the negative/ground terminal of your load |
The module also has an onboard multi-turn potentiometer (small blue or gold trimmer) used to adjust the output voltage. Turning it clockwise increases the output voltage; turning it counter-clockwise decreases it.
📏 Mechanical Drawing and Dimensions
CLICK HERE to download this XL6009 Boost Dimensional and Mechanical Drawing in PDF format.
🔌 Wiring
Basic Wiring
Wiring the XL6009 boost converter is straightforward — just connect your input power source and your output load:
- Connect your DC power source to the input pads: positive wire to IN+, negative wire to IN−.
- Connect your load (the device you want to power) to the output pads: positive wire to OUT+, negative wire to OUT−.
- Adjust the output voltage using the onboard potentiometer (see the Setup section below).
💡 Tip: It's a good practice to install an inline fuse on the input side (rated for your expected current draw) since this module does not have built-in short-circuit protection.
Wiring Summary
| Module Pad | Connect To |
| IN+ | Power source positive (+) |
| IN− | Power source negative (−) / Ground |
| OUT+ | Load positive (+) |
| OUT− | Load negative (−) / Ground |
🔧 Setup & Output Voltage Adjustment
Before connecting your target device, you should set the output voltage to the desired level. Here's how:
- Connect your input power source to IN+ and IN− (make sure it's within the 5V–32V range).
- Leave the output disconnected from your load for now.
- Connect a multimeter to OUT+ and OUT− and set it to DC voltage mode.
-
Turn the onboard potentiometer slowly with a small Phillips or flathead screwdriver:
- Clockwise = increase output voltage
- Counter-clockwise = decrease output voltage
- Adjust until your multimeter reads the desired output voltage.
- Connect your load to OUT+ and OUT−.
- Verify the output voltage again under load — it may shift slightly, so fine-tune the potentiometer as needed.
💡 Tip: The potentiometer is multi-turn, so don't be surprised if it takes several full rotations to reach your target voltage. This is by design — it gives you finer control over the output.
⚠️ Important: Always set the output voltage before connecting your load device. Connecting a device to an incorrectly set output could damage sensitive electronics.
🎯 Typical Applications
- Boosting battery voltage for portable electronics and field equipment
- Powering LED strips or LED drivers that require higher voltages
- Stepping up 12V automotive power to 24V or higher for accessories
- Providing adjustable bench power supply voltage from a fixed source
- Solar panel voltage boosting for charge controllers or inverters
- Powering motors, solenoids, or relays that need a higher supply voltage
- DIY and hobby electronics projects requiring voltage step-up
💡 Tips & Best Practices
- Mind the voltage gap: The output voltage must be at least ~1.5V higher than the input voltage. For example, if your input is 12V, the minimum useful output is about 13.5V.
- Watch your power budget: Maximum output power is 15W with natural air cooling and up to 25W with a heatsink. Calculate your power needs (Voltage × Current) and stay within these limits.
- Add a heatsink for heavy loads: If you're drawing more than about 1A continuously at high boost ratios, consider adding a small heatsink to the inductor and/or the XL6009 IC to prevent thermal shutdown.
- Use short, thick wires: Especially on the input side, use appropriately sized wires to minimize voltage drop and maximize efficiency.
- Install input protection: Since the module lacks short-circuit protection, always use a fuse or a resettable polyfuse on the input. A fuse rated at 1.5× your expected maximum input current is a good starting point.
- Avoid extreme boost ratios: Efficiency drops significantly when the output voltage is many times higher than the input. For best efficiency, keep the boost ratio (Vout ÷ Vin) below about 4:1.
- Secure the potentiometer: Once you've dialed in your desired output voltage, you can apply a small drop of nail polish or thread-lock compound to the potentiometer to prevent it from shifting due to vibration.
- Derating at high temperatures: If the ambient temperature exceeds 40°C, reduce the load or add forced-air cooling to stay within safe operating limits.
🚫 Limitations
- Boost only: This module can only step voltage up. It cannot reduce (buck) voltage. If you need both step-up and step-down capability, look at the XL6009 Boost/Buck version instead.
- No short-circuit protection: A short on the output can damage the module. Always use an external fuse.
- Not suitable for sensitive analog circuits: The 400KHz switching frequency produces ~50mV of output ripple, which increases under heavy load. If you're powering sensitive analog or audio circuits, add additional filtering (LC filter or linear post-regulator).
- Current derating at high boost ratios: While the module is rated for 2.5A output, achieving this at very high boost ratios (e.g., 5V in → 48V out) is not practical due to thermal and efficiency constraints. At extreme ratios, expect usable output current to be significantly lower.
- No reverse polarity protection: Connecting the input with reversed polarity can permanently damage the module.
🛠️ Troubleshooting
| Problem | Possible Cause & Solution |
| No output voltage | Check that input polarity is correct (IN+ to positive, IN− to negative). Verify input voltage is within 5V–32V range. Check for blown fuse if one is installed. |
| Output voltage too low or won't reach target | Turn the potentiometer clockwise. Ensure the input voltage is at least 1.5V below your target output. Check that your load isn't drawing more current than the module can supply. |
| Output voltage unstable or fluctuating | Check for loose solder connections on the input and output pads. Ensure your power source can deliver sufficient current. Add a capacitor (100–470µF electrolytic) across the input terminals. |
| Module gets very hot | You may be exceeding the module's power rating. Reduce the load current, add a heatsink, or provide forced-air cooling. Check that the boost ratio isn't excessively high. |
| High output ripple or noise | This is normal at higher currents and boost ratios. Add an LC filter or additional capacitance on the output. Consider a linear post-regulator for noise-sensitive loads. |
| Module stopped working after a short circuit | The XL6009 IC or the MOSFET may be damaged — the module has no built-in short-circuit protection. The module will need to be replaced. Always use an input fuse to prevent this. |
📦 What's in the Box
- 1 × XL6009 Adjustable Boost Step-Up DC-DC Converter Module
🏪 Where to Buy the XL6009 Boost DC/DC Converter
The XL6009 boost converter can be purchased directly at Envistia Mall:
- 📦 Fast US Shipping
- 🔄 Hassle-Free Returns
- 📧 Responsive Customer Support
📚 Additional Resources
Sold and supported by Envistia Mall. Ships from the USA. The manufacturer and Envistia LLC (dba Envistia Mall) are not responsible for any damages or losses resulting from the use of this product. Always follow proper electrical safety practices when working with electronic components. Specifications are based on manufacturer data and are subject to change without notice.