AMS1117-3.3 LDO Linear Regulator Board 800mA 3.3V Power Module
AMS1117-3.3 LDO Linear Regulator Board 800mA 3.3V Power Module
AMS1117-3.3 LDO Linear Regulator Power Supply Module – 800mA, 3.3V
The AMS1117-3.3 Linear Regulator Board is a compact, reliable low-dropout (LDO) power supply module delivering a stable 3.3V output at up to 800mA. Ideal for microcontroller projects, Arduino builds, Raspberry Pi accessories, and any DIY electronic design requiring a clean, regulated 3.3V power rail — all in an ultra-compact 12.6 × 8.6 mm footprint.
Key Features
- Stable 3.3V Output: Delivers a regulated 3.3V DC supply suitable for sensitive digital circuits and microcontrollers.
- 800mA Output Current: Handles loads up to 800mA continuously, making it versatile for a wide range of components.
- Low Dropout Voltage: Only 1.2V dropout — the input needs to be just 1.2V above the output to operate normally, improving efficiency.
- Input Range DC 4.5V–7V: Compatible with common USB (5V) and small DC power sources.
- Built-in Power Indicator LED: Instantly confirms when the module is powered and operating.
- CE Certified: Complies with EU Low Voltage Directive (LVD) — below 50V AC / 75V DC.
- Compact PCB Design: At just 12.6 × 8.6mm, it fits into tight enclosures and breadboard setups with ease.
- DIY-Friendly: Perfect for power expansion in single-chip microcomputer (MCU) projects and custom electronic designs.
Technical Specifications
| Input Voltage | DC 4.5V – 7V |
| Output Voltage | 3.3V (fixed) |
| Output Current | Up to 800mA |
| Dropout Voltage | ~1.2V (low dropout) |
| Module Size | 12.6 × 8.6 mm |
| Material | Plastic + Metal |
| Quantity | 1 piece per order |
| Certification | CE (EU LVD) |
| Country of Origin | Made in Mainland China |
Common Applications
- Arduino, ESP8266, ESP32, and other 3.3V microcontroller boards
- Single-chip MCU (microcomputer) project power supplies
- DIY electronics prototyping and breadboard circuits
- Power expansion for sensors and wireless modules
- Hobbyist and maker space projects
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Note: Due to monitor calibration differences, actual board color may vary slightly from images. Please allow minor measurement tolerances (±0.5mm).
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Frequently Asked Questions
Q: What input voltage does the AMS1117-3.3 power module require?
A: The AMS1117-3.3 LDO linear regulator module requires a DC input voltage between 4.5V and 7V. The input must be at least 1.2V higher than the 3.3V output to function correctly — a standard 5V USB supply works perfectly.
Q: Can this module handle more than 800mA of current?
A: The module is rated for a continuous output of up to 800mA at 3.3V. Exceeding this rating is not recommended, as it may cause the regulator to overheat or reduce its lifespan. For applications requiring higher current, consider using multiple modules or a higher-rated power supply IC.
Q: Is this AMS1117-3.3 module suitable for Arduino and ESP8266 projects?
A: Yes — this module is an excellent power supply solution for Arduino, ESP8266, ESP32, and other 3.3V logic-level microcontrollers. Its compact size and stable output make it ideal for DIY electronics prototyping and embedded system designs.
Q: What does the onboard LED indicator do?
A: The built-in power indicator LED lights up as soon as the module receives valid input power, giving you instant visual confirmation that the 3.3V regulated output is active and the module is functioning correctly.