AMS1117-3.3 Voltage Regulator (original)

The AMS1117-3.3 is <mark>a highly popular, low-dropout (LDO) linear voltage regulator that steps down a higher input voltage to a stable 3.3V output</mark>. It is widely used in DIY electronics, microcontrollers, and IoT projects to safely power components like the ESP32 and ESP8266.

Key Specifications & Pinout

• Output Voltage: Fixed at 3.3V (with 1% to 1.5% precision).
• Input Voltage: Up to 15V maximum, but typically recommended between 4.75V and 5.5V to prevent overheating.
• Dropout Voltage: Typically 1.1V to 1.3V at maximum load.
• Output Current: Up to 1A.
• Pinout (SOT-223 package):
  1. Pin 1: Ground / Adjust
  2. Pin 2: Output (3.3V)
  3. Pin 3: Input ((V_{in}))