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AMS1117-5.0 DC-DC Step-Down Power Supply Module (Fixed 5V)

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When you need a quick, reliable 5-Volt power source for your project but do not want to design a custom regulation circuit from scratch, this AMS1117-5.0 breakout module is the perfect solution. At its core is the popular AMS1117 Low Dropout (LDO) linear regulator chip, which is surface-mounted onto a tiny printed circuit board alongside all the necessary supporting components. It features pre-soldered input and output filtering capacitors to ensure a clean, noise-free voltage, as well as a convenient onboard LED to let you instantly know that power is flowing.

Designed specifically for rapid prototyping and easy integration, this module features a simple three-pin header design (Input, Ground, and Output). It takes a slightly higher, unregulated input voltage—such as a 9-Volt battery or a 7.4-Volt lithium polymer pack—and steps it down to a highly accurate, continuous 5 Volts. Because it is so compact, it can easily be plugged directly into a breadboard or soldered permanently into your custom enclosures to run standard 5-Volt logic chips and development boards.

Key Features & Functional Advantages

  • Plug-and-Play Design: Comes completely assembled with the regulator chip, smoothing capacitors, and a power indicator LED, saving you the time and effort of wiring discrete components.

  • Low Dropout Operation: As an LDO regulator, it only requires your input voltage to be roughly 1.5 Volts higher than your 5-Volt output to function correctly, making it highly efficient for battery-powered applications.

  • Fixed 5-Volt Output: Factory calibrated to deliver exactly 5 Volts, completely eliminating the need for complex external resistor dividers.

  • Breadboard Compatible: The pre-soldered, standard 2.54mm pitch header pins plug seamlessly into standard solderless breadboards and standard jumper wires.

  • Built-in Protection: Features internal thermal shutdown and current-limiting hardware to protect the module from destroying itself during accidental short circuits.

Perfect For

  • Rapid Prototyping: The fastest way to drop a clean 5-Volt rail onto a breadboard for testing new logic gates, operational amplifiers, and sensors.

  • Microcontroller Power: Providing a dedicated, stable voltage supply for standard 5-Volt development boards directly from higher voltage battery packs.

  • Custom Sensor Nodes: Creating small, localized power zones for individual sensors that are placed far away from the main system power supply.

  • Space-Constrained Builds: Ideal for compact 3D-printed enclosures where traditional, bulky through-hole regulators and large heatsinks will not fit.

Technical Specifications

  • Device Type: Low Dropout (LDO) Linear Voltage Regulator Module

  • Onboard IC: AMS1117-5.0

  • Output Voltage: Fixed 5.0 Volts DC

  • Input Voltage Range: 6.5 Volts to 12.0 Volts DC

  • Maximum Output Current: 800 milliamps (thermal limits apply)

  • Status Indicator: Onboard Red LED

  • Pin Configuration: VIN (Input), GND (Shared Ground), VOUT (Output)

  • Dimensions: Approximately 25mm x 11mm

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