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AMS1117 Voltage Regulator IC 3.3V

SKU: 23PJ9N3ROP
The AMS1117-3.3 is a fixed-output 3.3V Low Dropout (LDO) Voltage Regulator IC designed to provide a stable and regulated 3.3V output from a higher input voltage source. It is widely used in embedded systems, IoT devices, microcontroller circuits, wireless modules, and development boards where reliable 3.3V power is required. The regulator can supply up to 1A output current and features...
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Specifications

Specifications:

IC Type: Low Dropout (LDO) Voltage Regulator
Model: AMS1117-3.3
Output Voltage: 3.3V Fixed
Output Current: Up to 1A
Input Voltage Range: 4.5V – 15V DC
Maximum Input Voltage: 15V DC
Dropout Voltage: Typically 1.1V, Maximum 1.3V @ 1A
Output Accuracy: ±1%
Line Regulation: Typically 0.2% Max
Load Regulation: Typically 0.4% Max
Quiescent Current: Typically 5mA – 10mA
Ripple Rejection: Up to 75dB
Protection Features: Thermal Shutdown, Current Limiting
Operating Temperature: -40°C to +125°C
Mounting Type: Surface Mount / Through-Hole Module Variants
Package Type: Commonly SOT-223

Additional Resources

AMS1117.PDF

FAQ

1. What is the AMS1117-3.3 Voltage Regulator used for?

The AMS1117-3.3 is used to convert a higher DC voltage into a stable 3.3V output for powering microcontrollers, sensors, wireless modules, and embedded electronics.

2. What output voltage does the AMS1117 provide?

The AMS1117-3.3 provides a fixed and regulated output voltage of 3.3V DC.

3. How much current can the AMS1117-3.3 supply?

The regulator can deliver up to 1A output current when properly cooled and operated within specifications.

4. What is the minimum input voltage required for the AMS1117-3.3?

The regulator typically requires about 4.5V input to maintain a stable 3.3V output due to its dropout voltage characteristics.

5. Does the AMS1117 include built-in protection features?

Yes, the AMS1117 includes thermal shutdown and current limiting protection to safeguard the regulator and connected circuits from damage.

View full product details

The AMS1117-3.3 is a fixed-output 3.3V Low Dropout (LDO) Voltage Regulator IC designed to provide a stable and regulated 3.3V output from a higher input voltage source. It is widely used in embedded systems, IoT devices, microcontroller circuits, wireless modules, and development boards where reliable 3.3V power is required. The regulator can supply up to 1A output current and features a low dropout voltage, making it suitable for battery-powered and low-voltage applications.

The AMS1117-3.3 incorporates built-in current limiting and thermal shutdown protection, ensuring safe and reliable operation. Due to its compact size, low cost, and excellent performance, it is commonly found on ESP8266, ESP32, NodeMCU, and various sensor modules.

Key Features

  • Fixed 3.3V output voltage
  • Low Dropout (LDO) regulator design
  • Output current up to 1A
  • Low dropout voltage (typically 1.1V–1.3V)
  • Built-in thermal overload protection
  • Internal current limiting protection
  • Excellent line and load regulation
  • Suitable for battery-powered applications
  • Requires minimal external components
  • High output accuracy
  • Ideal for powering 3.3V microcontrollers and modules
  • Available in SOT-223, TO-252, and other package variant