Description
AMS1117-3.3V LDO Voltage Regulator IC
The AMS1117-3.3V is a popular Low Dropout (LDO) Voltage Regulator IC designed to convert higher DC input voltages into a stable and regulated 3.3V DC output. It is one of the most widely used voltage regulators in embedded electronics due to its simplicity, reliability, and excellent performance.
Designed to operate with an input voltage ranging from 4.5V to 12V DC (up to 15V maximum), the AMS1117-3.3V provides a fixed 3.3V output suitable for powering modern low-voltage digital circuits. With the ability to deliver up to 1A output current when adequate heat dissipation is provided, it is an excellent choice for powering microcontrollers, wireless communication modules, sensors, and development boards.
The AMS1117 features a low dropout voltage, allowing efficient voltage regulation even when the input voltage is only slightly higher than the required 3.3V output. This improves power efficiency while maintaining stable operation for sensitive electronic components.
For enhanced reliability, the regulator incorporates thermal overload protection and short-circuit current limiting, helping protect both the IC and connected devices from damage caused by excessive temperature or fault conditions. These built-in protection mechanisms make it suitable for both prototype development and commercial electronic products.
Packaged in the compact SOT-223 form factor, the AMS1117-3.3V is easy to integrate into custom PCBs, development boards, and embedded hardware designs. It is commonly used to supply regulated 3.3V power to ESP8266, ESP32, STM32, Arduino-compatible circuits, Raspberry Pi accessories, Bluetooth modules, Wi-Fi modules, GPS receivers, sensors, and other digital electronics.
Whether you’re building an IoT device, designing an embedded controller, developing a sensor interface, or creating a battery-powered project, the AMS1117-3.3V offers a simple and dependable solution for generating a stable 3.3V power supply.
Applications
- ESP8266 Wi-Fi Modules
- ESP32 Development Boards
- STM32 Microcontroller Boards
- Arduino Projects
- Raspberry Pi Expansion Modules
- Embedded Systems
- IoT Devices
- Sensor Modules
- Wireless Communication Circuits
- GPS Modules
- Robotics
- Industrial Control Electronics
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | AMS1117-3.3V Voltage Regulator IC |
| Device Type | Low Dropout (LDO) Voltage Regulator |
| Output Voltage | 3.3V DC (Fixed) |
| Input Voltage | 4.5V – 12V DC |
| Maximum Input Voltage | 15V DC |
| Output Current | Up to 1A (with proper heat dissipation) |
| Dropout Voltage | Low Dropout |
| Package Type | SOT-223 |
| Protection Features | Thermal Overload Protection, Short-Circuit Protection |
| Output Type | Fixed Regulated Output |
| Mounting Type | Surface Mount (SMD) |
| Applications | ESP8266, ESP32, STM32, Arduino, Raspberry Pi Modules, Sensors, IoT & Embedded Systems |
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