Dual 3A USB Charge Buck Converter Module LM2596

The LM2596 Dual USB Buck Converter is a versatile step-down power module designed to convert DC voltage from 6V to 40V down to a stable 5V output at up to 3A. Based on the proven LM2596 switching regulator IC, this module is perfect for hobbyists, automotive enthusiasts, and DIY electronics creators who need reliable USB charging or 5V power in mobile, vehicular, or embedded applications. With its dual USB outputs and efficient buck conversion, it's an excellent choice for powering multiple devices simultaneously from higher-voltage sources.

Key Features:

• Dual USB Output Ports: Two standard USB Type-A connectors allow simultaneous charging of two devices at 5V.
• Wide Input Voltage Range: Accepts DC input from 6V to 40V, making it compatible with 12V, 24V, and 36V systems commonly found in vehicles and industrial equipment.
• Stable 5V Output: Delivers a regulated 5V output suitable for charging smartphones, tablets, and powering 5V electronics.
• High Current Capacity: Supports up to 3A total output current, ensuring fast and reliable charging.
• Compact PCB Design: Red soldermask PCB with clearly labelled input terminals and output ports for easy integration.
• Screw Terminal Input: Blue two-position screw terminal block for secure and convenient DC input connections.
• DC Barrel Jack Input: Additional DC barrel jack connector (5.5mm x 2.1mm) for flexible input options.
• Adjustable Output Option: Blue potentiometer on board allows fine-tuning of output voltage if needed for non-USB applications.
• Efficient Switching Regulator: Based on the LM2596 IC, a high-efficiency step-down switching regulator with up to 92% efficiency.
• Built-in Inductor: Large toroidal inductor (marked "4R7") provides stable current handling and minimises ripple.
• Input and Output Filtering: Electrolytic capacitors (25V 470µF and 16V 220µF visible) ensure clean, stable power delivery.
• Thermal Performance: The LM2596 IC operates efficiently with minimal heat generation, suitable for continuous operation in automotive and mobile environments.
• Input Voltage Range: 6V to 40V DC
• Output Voltage: 5V DC (fixed for USB outputs)
• Output Current: Up to 3A total (shared across both USB ports)
• Switching Frequency: Typically 150kHz (LM2596 standard specification)
• Protection Features: Thermal shutdown and current limiting inherent to the LM2596 IC design
• Operating Temperature Range: -40°C to +85°C (typical for LM2596-based modules)
• Board Dimensions: Approximately 42mm x 36mm (compact form factor for easy mounting)

Applications

• Vehicle Charging: Ideal for creating custom car or truck USB chargers from 12V or 24V vehicle electrical systems.
• Solar Power Systems: Step down voltage from solar panels or battery banks to provide USB charging ports.
• DIY Electronics Projects: Power 5V microcontrollers, sensors, and modules from higher-voltage battery packs or power supplies.
• Mobile Workstations: Provide convenient USB charging in caravans, boats, or off-grid setups.
• Educational Use: Teach students about buck converters, voltage regulation, and power electronics with a practical, hands-on module.

Why Choose the LM2596 Dual USB Buck Converter? This module delivers reliable, efficient power conversion with the convenience of dual USB outputs, making it perfect for anyone needing versatile 5V power from a wide range of input sources. Whether you're building a custom vehicle charger, adding USB ports to a solar setup, or powering your latest maker project, the LM2596 Dual USB Buck Converter offers excellent value, robust performance, and the flexibility to adapt to your needs.