AMS1117 3.3V 1A Low Dropout Voltage Regulator

AMS1117 3.3V 1A Low Dropout Voltage Regulator – SOT-223 Package

The AMS1117 3.3V 1A Voltage Regulator is a fixed low dropout (LDO) linear regulator designed to provide stable and efficient 3.3V output in a wide range of electronic applications. Supporting up to 1A continuous output current, this regulator operates with a typical dropout voltage of 1.3V at full load, minimizing energy loss in voltage conversion processes. Manufactured by Advanced Monolithic Systems, it is widely used in embedded systems, Arduino boards, IoT devices, and low-power microcontroller circuits. It supports input voltages from 4.75V to 12V, making it suitable for systems requiring reliable step-down regulation with minimal thermal output.

With integrated thermal shutdown and current limiting features, the AMS1117 regulator safeguards connected circuits from overheating and overcurrent, increasing operational stability. It operates within a temperature range of 0°C to 125°C and delivers precision output voltage with an accuracy of ±2%, helping maintain reliable voltage levels under dynamic load conditions. Packaged in a compact SOT-223 footprint, this component is easy to install in high-density PCB layouts and is compatible with automated manufacturing processes.

Its low standby current of just 2mA supports energy-conscious designs, especially where power efficiency is critical. The AMS1117 3.3V version is widely adopted in powering logic-level components such as CPLDs, FPGAs, and sensor interfaces, while also being suitable for battery-powered devices and SCSI termination.

Minimum order quantity is 30 pieces.

Key Specs Output Voltage: 3.3V fixed Output Current: 1A continuous Input Voltage Range: 4.75V to 12V Dropout Voltage: 1.3V at full load Standby Current: 2mA typical Package: SOT-223 surface mount Voltage Accuracy: ±2% Protection Features: Overcurrent, Thermal Shutdown Operating Temperature Range: 0°C to 125°C Applications: Arduino, IoT systems, FPGA/CPLD circuits, battery-powered designs, embedded controllers Brand: Advanced Monolithic Systems (AMS) Compliance: RoHS