CJMCU USB Power Supply Module – 5V/3.3V Dual Output with AMS1117 Regulator

The CJMCU USB Power Supply Module is a compact and convenient solution for powering your DIY electronics, microcontrollers, and prototyping circuits. It delivers both 5V and 3.3V regulated outputs using the reliable AMS1117 linear voltage regulator, making it an ideal companion for Arduino, ESP32, and Raspberry Pi projects.

This module features dual input options — a Mini USB port for 5V DC input and a DC barrel jack (5.5×2.1mm) supporting 5V to 12V input. Its compact plug-and-play design allows for quick setup and seamless integration into breadboards and custom PCBs.

🔧 Key Features

• Compact CJMCU USB Power Supply Module with dual voltage outputs
• Provides stable 5V and 3.3V output from USB or DC barrel jack input
• Integrated AMS1117 voltage regulator ensures safe and consistent power
• Dual input design: Mini USB and 5.5mm barrel jack (5V–12V DC)
• Perfect for powering sensors, modules, and microcontrollers
• Easy to use, breadboard-friendly layout for prototyping

📐 Technical Specifications

📌 Applications

• Powering Arduino, ESP32, and STM32 development boards
• DIY electronics and rapid prototyping
• Embedded systems and sensor networks
• Bench-top regulated power source
• Battery replacement in low-current projects

💡 Why Choose This Module?

The CJMCU USB Power Supply Module is a must-have for makers and developers. Its dual-voltage output, flexible input options, and AMS1117 regulation make it a reliable choice for powering a wide variety of low-voltage circuits with minimal effort.

📦 Package Includes

• 1 × CJMCU-MINI USB 5V/3.3V Power Supply Module