Regulated power supply module based on AMS1117

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  • 3 mins read

We often use the power supplies like batteries or direct AC/DC supply which are normally in higher ranges compared to the actual requirement for the circuit. In that cases we need this kind of voltage regulators which can regulate and vary the voltage levels for the circuit requirement.

The AMS1117 series of chips are linear voltage regulators with low voltage drop. The modules based on the AMS1117 chip provide constant 3.3V or 5V outputs from an unregulated DC input. It's very compact and can be included in your project schema or you can use it together with a breadboard for circuit testing.



1x Voltage regulator with 5V output (AMS1117)

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1x Voltage regulator with 3.3V output (AMS1117)

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Dupont wires

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1x 9V battery (or similar)

Wiring schema

The connection is pretty easy, it only has VIN (input voltage), VOUT (output voltage) and GND.

The input voltage may vary depending on our module:

  • Module with 5V output: VIN should be 6V-12V

  • Module with 3.3V output: VIN should be 4.5V-7V


Note: output current must not exceed 800mA.


This is how we can use AMS1117 in circuits where voltage regulation is needed. It's very useful in electronic developments where external modules are used and a separate power source is required. This is an excellent device which can control voltages without altering the power levels in the circuit as well as it doesn’t consumes any extra power.

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