The AMS1117-3.3RG is a fixed-output, low-dropout (LDO) linear voltage regulator that provides a regulated 3.3 V output from a higher input voltage. It is capable of delivering up to 1 A output current and is commonly used in microcontroller, communication, and embedded-system power supplies where a stable 3.3 V rail is required. The device includes built-in protection features such as current limiting and thermal shutdown for improved reliability.
Key Features
Fixed 3.3 V output voltage
Supports up to 1 A output current
Low dropout voltage, typically around 1.2 V and up to 1.3 V at 1 A load
Input voltage capability up to 12 V (some manufacturer variants specify higher absolute maximum ratings)
Good line and load regulation
Built-in current limiting protection
Built-in thermal shutdown protection
Available in SOT-223 surface-mount package
Suitable for post-regulation of switching power supplies and general 3.3 V power conversion applications
Typical Applications
ESP32, STM32, and other microcontroller-based systems
Embedded and IoT devices
Communication modules
LCD monitors and display circuits
Battery-powered equipment
Post-regulation for DC/DC converters
Motherboards and expansion cards
#CommonPartsLibrary #IntegratedCircuit #PowerManagement #LDO
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