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AMS1117 5V Step-Down Power Supply Module

AMS1117 5V Step-Down Power Supply Module AMS1117 5V Step-Down Power Supply Module
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Efficiency

Up to 95%

Dropout Voltage

1.5V

Quiescent Current

Typically 5mA

Operating Temperature

-40C to 85C

Pinout

The AMS1117 5V Step-Down Power Supply Module has the following pinout
Vin (Input Voltage)Pin 1
GND (Ground)Pin 2
Vout (Output Voltage)Pin 3
En (Enable)Pin 4 (optional, active high)

Applications

The AMS1117 5V Step-Down Power Supply Module is suitable for a wide range of applications, including

IoT projects and devices

Embedded systems and microcontrollers

Robotics and automation systems

Battery-powered devices and wearables

Solar-powered systems and renewable energy applications

Conclusion

The AMS1117 5V Step-Down Power Supply Module is a reliable, efficient, and compact power conversion solution for a wide range of applications. Its high efficiency, wide input voltage range, and fixed 5V output voltage make it an ideal choice for powering 5V-tolerant devices and systems.

Pin Configuration

  • AMS1117 5V Step-Down Power Supply Module Documentation
  • Overview
  • The AMS1117 5V Step-Down Power Supply Module is a compact, high-efficiency voltage regulator module designed to convert input voltages between 7V to 12V to a stable 5V output. This module is based on the AMS1117-5.0 voltage regulator IC, which provides a high current output, low dropout voltage, and excellent line and load regulation.
  • Pinout Description
  • The AMS1117 5V Step-Down Power Supply Module has a total of 3 pins, which are:
  • Pin 1: VIN (Input Voltage)
  • Function: Input voltage pin, which accepts voltages between 7V to 12V.
  • Description: This pin is connected to the input power source, such as a battery or a wall adapter.
  • Recommended connections:
  • + Connect a voltage source (e.g., battery or wall adapter) with a voltage between 7V to 12V to this pin.
  • + Ensure the input voltage is within the specified range to prevent damage to the module.
  • Pin 2: GND (Ground)
  • Function: Ground pin, which provides a reference point for the circuit.
  • Description: This pin is connected to the ground potential of the circuit.
  • Recommended connections:
  • + Connect this pin to the ground potential of the circuit, such as the negative terminal of the battery or the ground pin of a microcontroller.
  • Pin 3: VOUT (Output Voltage)
  • Function: Output voltage pin, which provides a regulated 5V output.
  • Description: This pin is connected to the output circuit, such as a microcontroller, sensor, or other devices that require a 5V power supply.
  • Recommended connections:
  • + Connect this pin to the power input pin of the device or circuit that requires a 5V power supply.
  • + Ensure the output current does not exceed the maximum rating of the module ( typically 1A).
  • Connection Structure
  • To connect the AMS1117 5V Step-Down Power Supply Module, follow these steps:
  • 1. Connect the input voltage source:
  • Connect the positive terminal of the input voltage source (e.g., battery or wall adapter) to Pin 1 (VIN).
  • Ensure the input voltage is within the specified range (7V to 12V).
  • 2. Connect the ground:
  • Connect Pin 2 (GND) to the ground potential of the circuit (e.g., the negative terminal of the battery or the ground pin of a microcontroller).
  • 3. Connect the output:
  • Connect Pin 3 (VOUT) to the power input pin of the device or circuit that requires a 5V power supply.
  • Ensure the output current does not exceed the maximum rating of the module (typically 1A).
  • Caution
  • When connecting the module, ensure the input voltage is within the specified range to prevent damage to the module.
  • When disconnecting the module, ensure the input voltage is removed before disconnecting the output connection to prevent back-EMF damage.
  • Avoid overloading the module by exceeding the maximum output current rating.
  • By following these guidelines, you can safely and effectively use the AMS1117 5V Step-Down Power Supply Module in your IoT projects.

Code Examples

AMS1117 5V Step-Down Power Supply Module Documentation
Overview
The AMS1117 5V Step-Down Power Supply Module is a compact, high-efficiency voltage regulator module based on the AMS1117 linear voltage regulator IC. This module is designed to provide a stable 5V output from input voltages ranging from 6V to 12V, making it an ideal power supply solution for various IoT projects.
Key Features
Input voltage range: 6V to 12V
 Output voltage: 5V  2%
 Output current: up to 1A
 High efficiency: up to 92%
 Low dropout voltage: 1.5V
 Compact size: 20mm x 15mm x 5mm
Pinout
| Pin | Function |
| --- | --- |
| Vin | Input voltage (6V to 12V) |
| Vout | Output voltage (5V) |
| GND | Ground |
Code Examples
### Example 1: Basic Power Supply for Arduino Projects
In this example, we will use the AMS1117 module to power an Arduino Uno board. This is a common use case, as the Arduino Uno operates at 5V and can be powered from a wide range of input voltages.
Hardware Connection
Connect the Vin pin of the AMS1117 module to a power source (e.g., a 9V battery or a wall adapter).
 Connect the Vout pin of the AMS1117 module to the Vin pin of the Arduino Uno board.
 Connect the GND pin of the AMS1117 module to the GND pin of the Arduino Uno board.
Arduino Code
No code is required, as the AMS1117 module provides a regulated 5V output that can be used to power the Arduino Uno board.
### Example 2: Powering a Wi-Fi Module using the AMS1117 Module
In this example, we will use the AMS1117 module to power a Wi-Fi module, such as the ESP8266, which typically operates at 3.3V. This example demonstrates how to use the AMS1117 module to step down a higher input voltage to a lower output voltage.
Hardware Connection
Connect the Vin pin of the AMS1117 module to a power source (e.g., a 9V battery or a wall adapter).
 Connect the Vout pin of the AMS1117 module to the Vcc pin of the Wi-Fi module (e.g., ESP8266).
 Connect the GND pin of the AMS1117 module to the GND pin of the Wi-Fi module.
Note: The AMS1117 module can also be used to power other modules or devices that require a 5V supply, simply by connecting the Vout pin to the device's power input pin.
### Example 3: Using the AMS1117 Module with a Microcontroller (Optional)
In this example, we will use the AMS1117 module to power a microcontroller, such as the ATmega328P, which operates at 5V. This example demonstrates how to use the AMS1117 module to regulate the power supply for a custom microcontroller-based project.
Hardware Connection
Connect the Vin pin of the AMS1117 module to a power source (e.g., a 9V battery or a wall adapter).
 Connect the Vout pin of the AMS1117 module to the Vcc pin of the microcontroller (e.g., ATmega328P).
 Connect the GND pin of the AMS1117 module to the GND pin of the microcontroller.
Microcontroller Code
No code is required, as the AMS1117 module provides a regulated 5V output that can be used to power the microcontroller. However, you may need to configure the microcontroller's power management settings depending on your specific project requirements.
Remember to always follow proper safety precautions when working with electrical components and to consult the datasheets of all components used in your project.