AMS1117 1.8V 1A LDO Voltage Regulator SOT-223

AMS1117 1.8V 1A LDO Voltage Regulator SOT-223 is a fixed low-dropout linear voltage regulator that outputs a constant 1.8V with a maximum current of 1A. It is ideal for low voltage digital applications, microcontrollers, and embedded systems, and comes in a compact SOT-223 surface-mount package.

Key Features of AMS1117 1.8V:

• • Fixed 1.8V Output: Accurate and stable 1.8V DC regulated output.
  • Low Dropout: Requires only ~1.1V higher input than output.
  • Maximum Output Current: Delivers up to 1A current.
  • Thermal Protection: Integrated overheating shutdown.
  • Short Circuit Protection: Internal current limiting prevents damage.
  • Surface Mount: Compact SOT-223 package for space-constrained designs.

Technical Specifications of AMS1117 1.8V:

• • Output Voltage: 1.8V ±1%
  • Output Current: Up to 1A
  • Dropout Voltage: ~1.1V at 800mA
  • Input Voltage Range: 3V to 15V
  • Operating Temperature: 0°C to +125°C
  • Quiescent Current: Typical 5mA
  • Package Type: SOT-223

Mechanical Characteristics:

• • Package: SOT-223
  • Mounting Type: Surface Mount (SMD)
  • Pin Count: 3 Pins
  • Dimensions: Approx. 6.5mm x 3.5mm x 1.6mm

Pinout Description:

• • Pin 1 (ADJ/GND): Ground (for fixed version)
  • Pin 2 (Vout): Regulated 1.8V output
  • Pin 3 (Vin): Unregulated input voltage
  • Tab (Back): Connected to Vout (used as heatsink)

Typical Applications of AMS1117 1.8V:

• • Low Voltage Microcontrollers: Supplies 1.8V logic level power
  • FPGA/ASIC Modules: Powers core and IO circuits
  • Embedded Systems: Common in ESP8266, ESP32 circuits using 1.8V logic
  • Consumer Electronics: Regulates low-voltage power rails
  • Networking Devices: Switches, routers needing 1.8V internal rail

Equivalent Models:

• • AMS1117-1.8 (Diodes Inc.): Official AMS version
  • TPS7A02 (Texas Instruments): Ultra-low Iq LDO alternative
  • NCP4681DSQ18T1G (ON Semi): Similar low dropout 1.8V LDO

Datasheet:

• • Download AMS1117-1.8V Datasheet (PDF)

Keywords for AMS1117 1.8V:

• • AMS1117 1.8V LDO
  • 1.8V Regulator SOT-223
  • Low Dropout 1A Regulator
  • AMS1117 Fixed Voltage Regulator
  • 1.8V Power Supply IC

Package Includes:

• • 1x AMS1117 1.8V 1A LDO Voltage Regulator SOT-223