24V to 5V DC Step-Down Module – 2.4A

The 9–24V DC to 5V Step-Down Converter Module is a compact and efficient DC-DC voltage regulator designed to convert higher DC input voltages into a stable 5V output. Featuring two USB-A ports and a 5.5 × 2.1mm DC output jack, this versatile power supply module is ideal for powering USB devices, electronic circuits, networking equipment and DIY electronics projects.

Designed for use with 12V and 24V DC power systems, the module accepts a nominal input voltage range of 9V to 24V and provides a regulated 5V output with a maximum combined current of 2.4A.

The onboard synchronous buck converter provides efficient voltage conversion, while integrated short-circuit, over-current and thermal protection help safeguard connected equipment.

Whether you're powering a Raspberry Pi, ESP32 development board, USB accessories or compatible 5V networking equipment, this compact DC step-down module offers a convenient solution for converting 12V or 24V DC power to 5V.

Key Features

• 9–24V DC Input: Compatible with common 12V and 24V DC power supplies, batteries and solar power systems.

• 5V DC Output: Steps down higher DC voltages to approximately 5V for compatible electronic devices.

• Dual USB-A Ports: Two USB outputs for powering or charging compatible 5V USB devices.

• 2.4A Maximum Output: Supports a combined output current of up to 2.4A across all output connections.

• DC Barrel Jack Output: Includes a 5.5 × 2.1mm DC socket for powering compatible 5V equipment.

• Efficient Buck Converter: Uses a synchronous DC-DC step-down converter for efficient voltage regulation.

• Integrated Protection: Designed with short-circuit, over-current and thermal protection.

• Output Filtering: Electrolytic capacitors help reduce voltage ripple and improve output stability.

• Compact PCB Design: Lightweight module suitable for integration into electronic enclosures and custom projects.

• DC Cable Included: Supplied with a 5.5 × 2.1mm male-to-male DC power cable.

Applications

The 12V/24V to 5V DC step-down module is suitable for a wide range of electronics and low-voltage power applications, including:

• Load Shedding Backup Systems: Power compatible 5V fibre ONTs, routers and networking accessories from a suitable DC battery backup system.

• Raspberry Pi and Microcontrollers: Supply 5V power to compatible Raspberry Pi, Arduino and ESP32 projects.

• LED Lighting: Operate compatible 5V LED strips and low-voltage lighting systems from 12V or 24V supplies.

• USB Charging: Charge compatible mobile phones, tablets and USB-powered accessories within the module's current capacity.

• Solar Power Systems: Convert 12V or 24V DC battery power into 5V for small electronic devices.

• Automotive Electronics: Provide 5V power for compatible accessories in vehicles, caravans and boats using a suitably protected DC supply.

• DIY Electronics: Ideal for prototyping, embedded systems, automation projects and custom power supply applications.

Technical Specifications

• Product Type: DC-DC Step-Down Converter / Buck Converter Module

• Input Voltage: 9–24V DC nominal operating range

• Converter IC Input Rating: 4.5–30V (subject to complete module limitations)

• Output Voltage: Nominal 5V DC

• Measured Output Voltage: Approximately 5.45V without load and 5.2V under load (as supplied; may vary)

• Maximum Output Current: 2.4A total (shared across all outputs)

• Maximum Nominal Output Power: 12W at 5V

• USB Outputs: 2 × USB Type-A Female

• DC Output: 1 × 5.5 × 2.1mm DC Female Jack

• DC Output Polarity: Centre Positive

• Input Connection: JST-XH Connector (verify pin configuration and polarity before connecting)

• Converter IC: LP6483 Synchronous Buck Converter (as specified)

• Switching Frequency: Approximately 340kHz

• Inductor: 6.8µH (as specified)

• Filtering Capacitors: 220µF input and output

• Protection: Short-Circuit, Over-Current and Thermal Protection

• Included Accessory: 5.5 × 2.1mm Male-to-Male DC Cable

Important Information

Shared Output Current: Both USB-A ports and the DC barrel jack share the same 5V power rail. The maximum 2.4A output is the total combined current available, not 2.4A per port.

DC Jack Connection: The 5.5 × 2.1mm DC barrel jack is a 5V output only. Do not connect a 12V or 24V power supply to this jack.

Input Polarity: Always verify the positive (+), negative (−) and enable (EN) connections on the PCB before connecting power.

Voltage Compatibility: Only connect equipment designed to operate at the module's actual output voltage. The stated no-load voltage of approximately 5.45V may exceed the acceptable input range of some sensitive 5V devices.

USB Charging: Charging speed depends on the connected device, supported charging protocol and available output current. Fast-charging compatibility is not guaranteed.

Power Supply Requirements: This module is intended for regulated DC input sources. Vehicle and other electrically noisy systems may require additional protection.

Package Includes

• 1 × 9–24V DC to 5V Step-Down Converter Module – 2.4A

• 1 × 5.5 × 2.1mm Male-to-Male DC Power Cable

An ideal compact 12V to 5V or 24V to 5V DC converter for USB power distribution, electronics projects, battery backup systems and low-voltage equipment.