The AMS1117-5.0 is a fixed-output low-dropout (LDO) voltage regulator designed to deliver a stable 5.0 V from input voltages up to 9 V. It’s widely used in microcontroller circuits, sensor modules, and 5 V logic systems where compact regulation is needed.

Specifications

• Input Voltage:
  • 6.2 V to 9 V DC (typical operating range)
• Output Voltage:
  • Fixed 5.0 V DC
• Maximum Output Current:
  • Up to 1 A (recommended ≤ 800 mA for continuous use)
• Dropout Voltage:
  • ~1.1 V at 1 A load
• Line Regulation:
  • 0.2% max
• Quiescent Current:
  • ~5–10 mA
• Package Type:
  • SOT-223 (surface mount)
• Operating Temperature:
  • –40 °C to +125 °C

Features

• Fixed 5.0 V output for powering TTL-level devices
• Low dropout design for efficient regulation from 6.2 V+ sources
• Compact footprint for embedded and modular PCBs
• Integrated thermal and overcurrent protection
• Ideal for powering Arduino boards, sensors, and 5 V logic ICs
• Common use cases:
  • 7.4 V Li-ion → 5 V conversion
  • Inline regulation for USB or battery-powered circuits
  • Voltage reference for analog sensors and logic gates

Link to datasheet: https://datasheet.lcsc.com/lcsc/1810231832_Advanced-Monolithic-Systems-AMS1117-5-0_C6187.pdf