AMS1117-ADJ Adjustable Linear Voltage Regulator Module

The AMS1117-ADJ Adjustable Linear Voltage Regulator Module is a compact, easy-to-use power supply module designed to provide a stable, adjustable DC output voltage for low-power electronics projects. Featuring the popular AMS1117-ADJ Low Dropout (LDO) voltage regulator, this module includes an integrated 5.5 × 2.1mm DC barrel jack, ON/OFF power switch, and an onboard multi-turn potentiometer for precise voltage adjustment.

Ideal for hobbyists, students, makers, and engineers, this module allows you to quickly create a regulated power supply for development boards, sensors, communication modules, and embedded electronics. Simply connect a compatible DC power adapter, adjust the output voltage to suit your application, and connect your project via the convenient output header pins.

Unlike switching regulators, the AMS1117 provides a clean, low-noise output, making it an excellent choice for sensitive analogue circuits and low-current digital electronics.

Features

• Adjustable regulated DC output voltage
• Genuine AMS1117-ADJ Low Dropout (LDO) voltage regulator
• Integrated 5.5 × 2.1mm DC barrel power input
• Built-in ON/OFF power switch
• Multi-turn trimmer potentiometer for accurate voltage adjustment
• Stable, low-noise power output
• Compact PCB design for breadboards and embedded projects
• Easy-to-use pin header output connections
• Ideal for DIY electronics, prototyping and educational projects

Applications

• Arduino projects
• ESP32 and ESP8266 development
• Raspberry Pi accessories
• IoT devices
• Sensor modules
• Robotics
• Embedded systems
• Electronics prototyping
• Educational laboratories
• Low-power communication modules

Technical Specifications

• Regulator IC: AMS1117-ADJ
• Module Type: Adjustable Linear Voltage Regulator (LDO)
• Input Connector: 5.5 × 2.1mm DC Barrel Jack
• Input Voltage: 4.5V – 15V DC (Recommended)
• Maximum Input Voltage: 15V DC
• Output Voltage: Adjustable from approximately 1.25V up to 12V (depending on input voltage)
• Maximum Output Current: Up to 1A (with adequate cooling)
• Recommended Continuous Output: 300–800mA
• Dropout Voltage: Approximately 1.2–1.3V
• Voltage Adjustment: Onboard multi-turn trimmer potentiometer
• Power Switch: ON/OFF Slide Switch
• Output Connector: 2 × 4 Pin Male Header
• PCB Colour: Blue
• Operating Temperature: -40°C to +125°C (IC Specification)

Protection Features

• Thermal shutdown protection
• Built-in current limiting
• Short-circuit protection
• Low dropout voltage design
• Stable low-noise output

Important Notes

• This module is a linear voltage regulator (LDO) and not a switching buck converter.
• The input voltage should always be approximately 1.3V higher than the required output voltage for proper regulation.
• As excess voltage is converted into heat, efficiency decreases when there is a large difference between the input and output voltages. For higher current applications or larger voltage drops (for example, converting 12V to 5V at high current), a switching buck converter is recommended.

Package Includes

• 1 × AMS1117-ADJ Adjustable Linear Voltage Regulator Module with DC Jack & Power Switch

The AMS1117-ADJ Adjustable Linear Voltage Regulator Module is a reliable and versatile power supply solution for makers, students, and electronics professionals. Its adjustable output, built-in power switch, and clean, regulated voltage make it an excellent choice for powering Arduino, ESP32, sensors, IoT devices, and countless other low-power electronic projects where stable DC power is essential.