AMS1117 5V 1A LDO Voltage Regulator SOT-223

AMS1117 5V 1A LDO Voltage Regulator SOT-223 is a low dropout linear voltage regulator providing stable 5V output with up to 1A current capability. Its compact SOT-223 package and excellent line/load regulation make it ideal for powering microcontrollers, sensors, and other 5V electronic components.

Key Features:

• • Fixed 5V Output: ±2% output voltage accuracy
  • High Current Capacity: 1A continuous output current
  • Low Dropout Voltage: 1.1V typical at full load
  • Thermal Protection: Built-in over-temperature shutdown
  • Current Limiting: Internal short-circuit protection

Technical Specifications:

• • Input Voltage Range: 6.1V to 15V DC
  • Output Voltage: 5V ±2% (4.9V-5.1V)
  • Output Current: Up to 1A (with heatsinking)
  • Dropout Voltage: 1.1V @ 1A load
  • Line Regulation: 0.2% typical
  • Load Regulation: 0.4% typical
  • Operating Temperature: -40°C to +125°C
  • Package Type: SOT-223 (4-pin)

Pin Configuration (SOT-223):

• • Pin 1 (GND): Ground connection
  • Pin 2 (VOUT): 5V regulated output
  • Pin 3 (VIN): Unregulated input voltage (6V-15V)
  • Pin 4 (TAB): Thermal pad (connect to GND)

Typical Application Circuit:

• • Basic Configuration:
    • Input capacitor: 10μF electrolytic (VIN to GND)
    • Output capacitor: 22μF electrolytic (VOUT to GND)
    • Thermal pad connected to ground plane
  • Design Considerations:
    • Maintain input voltage ≥6.1V for proper regulation
    • For currents >500mA, use PCB copper area as heatsink
    • Place capacitors close to regulator pins

Thermal Performance:

• • Thermal Resistance: 62°C/W (junction-to-ambient)
  • Max Power Dissipation: 1.25W @ 25°C ambient
  • Heatsinking: Recommended for currents >500mA

Applications:

• • Microcontroller Power: Arduino, ESP8266, Raspberry Pi
  • Sensor Modules: 5V sensor arrays
  • USB Devices: 5V peripheral power
  • Automotive Electronics: 12V to 5V conversion
  • Battery-Powered Devices: Voltage stabilization

Equivalent Regulators:

• • LM1117: Similar specifications
  • LD1117V50: Alternative 5V LDO

Datasheet:

• • Download AMS1117 Datasheet

Keywords:

• • AMS1117 5V Regulator
  • 1A LDO Voltage Regulator
  • SOT-223 5V Regulator
  • Low Dropout 5V Regulator
  • 5V 1A Power Regulator

Package Includes:

• • 1 x AMS1117 5V 1A LDO Voltage Regulator SOT-223