XL3608 DC-DC Boost Converter Module 2A 5V/9V/12V Selectable Mini Switching Power Supply Adjustable Step-Up Board

XL3608 Boost Converter Module Product Overview

The XL3608 Boost Converter Module is an ultra-compact, high-efficiency DC-DC boost converter module designed for applications requiring voltage step-up from lower DC inputs to stable higher outputs. Featuring a dedicated boost IC, the XL3608 Boost Converter Module accepts an input voltage range of DC 2.5V to 11.5V and delivers up to 2A of output current. Onboard jumper pads allow easy selection of 5V, 9V, or 12V fixed outputs, with an additional ADJ pad for adjustable voltage settings. Measuring just 24.4×13.7mm, the XL3608 Boost Converter Module supports Micro USB input and solder-pad interfaces, making it ideal for space-constrained portable devices, battery-powered systems, and DIY electronics projects.

XL3608 Boost Converter Module Core Features

High Efficiency & High Switching Frequency： Operating at approximately 1.2MHz with PWM/PFM working modes, the XL3608 Boost Converter Module maintains high efficiency across both light and heavy loads. Quiescent current is only 200μA to 600μA in PFM mode, extending battery life.

Flexible Output Voltage Selection： The XL3608 Boost Converter Module offers three fixed output options — 5V, 9V, and 12V — selectable via jumper pads. An ADJ pad is also available for adjustable output to meet diverse voltage requirements.

High Current Output Capability： Delivering up to 2A output current, the XL3608 Boost Converter Module can power various medium to high-power devices. Output power is determined by input voltage: Output Power = Input Voltage × 1.5 (max).

Ultra-Compact Size for Easy Integration： Measuring only 24.4×13.7mm, the XL3608 Boost Converter Module features a compact PCB design that fits easily into space-constrained devices. Both Micro USB input and solder-pad interfaces are available, compatible with 2.54mm pin headers.

Wide Input Voltage Range： The XL3608 Boost Converter Module supports DC 2.5V to 11.5V input, with input voltage needing to be at least 0.5V lower than the output voltage. Compatible with various batteries and power adapters for flexible applications.

XL3608 Boost Converter Module Applications

The XL3608 Boost Converter Module is widely used in various voltage step-up applications due to its compact size and high efficiency:

Portable Electronics Power Supply： Provide stable 5V power for Arduino, ESP8266, ESP32, and other development boards

Battery Boost Applications： Boost a single Li-ion cell (3.7V) to 5V for phone charging, or to 9V/12V for device power

DIY Electronics Projects： Supply required operating voltages for custom circuits and sensor modules

Wireless Communication Modules： Provide 5V/9V/12V power for LoRa, GSM, WiFi modules

LED Drivers： Power LED strips or high-power LEDs with stable boosted voltage

Automotive Electronics： Step up 12V vehicle power to higher voltages for specific devices

XL3608 Boost Converter Module Key Advantages

Plug-and-Play, No Programming Required： The XL3608 Boost Converter Module requires no software configuration — simply set the output voltage via jumper pads and use it immediately, ideal for rapid prototyping.

High Efficiency with Low Heat Generation： The 1.2MHz high switching frequency combined with PWM/PFM dual-mode control maintains high conversion efficiency across all load ranges, reducing energy loss and heat generation.

Ultra-Compact Size for Space-Constrained Designs： At just 24.4×13.7mm, the XL3608 Boost Converter Module easily fits into handheld devices, wearables, and IoT nodes with limited PCB space.

Three Fixed Voltages + Adjustable Mode： 5V, 9V, and 12V fixed outputs cover most common voltage requirements, while the ADJ adjustable mode provides greater flexibility — one XL3608 Boost Converter Module serves multiple applications.

High Current Output Capability： 2A maximum output current is sufficient to drive most portable devices and small motors without additional driver stages.

Wide Input Voltage Compatibility： The 2.5V to 11.5V input range accommodates single-cell Li-ion, two-cell Li-ion, USB power, and 12V adapters, offering versatile power source options.

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FAQ

1. What is the XL3608 Boost Converter Module and its key specifications?
The XL3608 Boost Converter Module is a compact step‑up switching regulator module. Key specifications include: Input voltage: 2.5 V – 5.5 V DC. Adjustable output: up to 28 V. Maximum output current: 2 A. Switching frequency: 1.2 MHz. Efficiency: up to 93%. The XL3608 Boost Converter Module also has built‑in over‑current, over‑temperature, and under‑voltage lockout protections, and an on‑board multi‑turn potentiometer for precise voltage setting.

2. How do I connect the XL3608 Boost Converter Module and set the output voltage?
Wiring the XL3608 Boost Converter Module is very simple. Connect your input power source (e.g., 3.7 V Li‑ion battery, USB 5 V) to IN+ and IN‑, observing correct polarity. Connect your load to OUT+ and OUT‑. Before connecting any sensitive load, use a multimeter to set the output voltage: turn the on‑board potentiometer clockwise to increase the voltage, counter‑clockwise to decrease it. The XL3608 Boost Converter Module can adjust from just above the input voltage up to about 28 V. Make small adjustments and monitor the output closely. The module does not have reverse‑input‑polarity protection, so always double‑check the wiring.

3. What is the maximum output current of the XL3608 Boost Converter Module, and how does it depend on input voltage?
The XL3608 Boost Converter Module is rated for a maximum output current of 2 A, but this is only achievable under specific conditions. For example, from a 3.7 V input, you can draw about 0.5 A at 12 V, or 0.3 A at 24 V. At 5 V input, the output current capability is higher. The XL3608 Boost Converter Module's internal switch current limit is typically 3 A. For reliable operation, keep the total output power under about 8 W – 10 W with adequate ventilation.

4. What is the typical efficiency of the XL3608 Boost Converter Module?
The XL3608 Boost Converter Module can achieve a peak efficiency of up to 93% under optimal conditions (moderate step‑up ratio, moderate load). Efficiency drops at very light loads and when the voltage boost ratio is large. In practice, you can expect efficiency in the 85% – 93% range for most common applications like boosting 5 V to 9 V or 12 V.

5. Can the XL3608 Boost Converter Module generate 5 V, 9 V, or 12 V from a single Li‑ion cell?
Yes, this is its most common use case. The XL3608 Boost Converter Module can boost a single 3.7 V Li‑ion battery to 5 V, 9 V, or 12 V. For a 3.7 V input, you can typically get about 1.2 A at 5 V, 0.8 A at 9 V, and 0.5 A at 12 V. Always ensure the input battery can supply the required current.

6. What protection features does the XL3608 Boost Converter Module include?
The XL3608 Boost Converter Module provides several built‑in protections: cycle‑by‑cycle over‑current protection (OCP), over‑temperature protection (OTP) that shuts down the chip at approximately 150 °C, and under‑voltage lockout (UVLO) that prevents operation when the input voltage is too low (below ~2.2 V). The module itself does not include reverse‑input‑polarity protection or output over‑voltage protection.

7. How does the XL3608 Boost Converter Module compare to the MT3608 or XL6009 boost modules?
The XL3608 Boost Converter Module is a newer, higher‑frequency (1.2 MHz) chip. It typically offers a lower RDS(on) internal switch, resulting in slightly higher efficiency and less heat compared to the MT3608. The XL6009 is a much larger, higher‑power boost converter suitable for higher‑power applications. The XL3608 Boost Converter Module is ideal for small, low‑to‑medium power portable projects.

8. Does the XL3608 Boost Converter Module get hot, and when should I add a heatsink?
At low to moderate output power (up to 5 W), the XL3608 Boost Converter Module runs warm but typically does not require an additional heatsink. At higher power levels, the chip can become hot. If the module is too hot to touch, improve ventilation, add a small aluminium heatsink, or reduce the load. The built‑in thermal protection will shut down the XL3608 Boost Converter Module if it overheats.

9. What is the minimum input voltage to start the XL3608 Boost Converter Module, and can I use a nearly‑empty battery?
The XL3608 Boost Converter Module has a typical minimum start‑up voltage of about 2.2 V. However, once started, it can operate down to about 2.0 V. This makes it suitable for use with a single Li‑ion cell that discharges down to 3.0 V – 2.8 V. If the input voltage drops too low, the under‑voltage lockout will shut down the XL3608 Boost Converter Module to protect the battery.

10. What are the most typical applications for the XL3608 Boost Converter Module?
The XL3608 Boost Converter Module is extremely popular in DIY portable electronics: boosting a single Li‑ion cell to 5 V for USB chargers, to 9 V or 12 V for routers and LED strips, and to higher voltages for sensor supplies. It is also used in battery‑powered IoT nodes, portable test equipment, and solar‑powered projects. Its small size, high efficiency, and easy voltage adjustment make the XL3608 Boost Converter Module a favourite for any project that needs a compact step‑up converter from a low‑voltage battery source.