AMS1117 Voltage Regulator Module (3.3V / 5V) – OverviewThe AMS1117 Voltage Regulator Module is a compact, reliable power solution built around the AMS1117 linear regulator IC. Available in fixed 3.3V or fixed 5V versions, this module steps down higher DC voltages to a clean, regulated output suitable for microcontrollers, sensors, and small electronic modules. Its LDO (low dropout) design and onboard capacitors provide stable performance for prototyping and embedded systems.Key FeaturesSelectable versions: 3.3V or 5V fixed outputLow dropout regulator (LDO) delivers steady voltage with minimal input-output differentialInput voltage range: typically 4.5V to 12V DC (varies by load and module version)Output current: up to 800mA depending on heat dissipation and ambient coolingCompact, breadboard-friendly PCB footprint for easy prototypingBuilt-in input and output capacitors to reduce ripple and improve transient responseSpecificationsRegulator IC: AMS1117 (linear LDO)Output voltage: 3.3V or 5V (fixed, depending on module version)Input voltage: typically 4.5V to 12V DC; ensure input is higher than output plus dropout voltageMaximum output current: up to 800mA (recommend lower continuous currents unless heat-sinked)Onboard capacitors: yes (input and output capacitors for stability)PCB: compact and breadboard-compatibleApplicationsPower supply for Arduino, ESP8266, ESP32, and Raspberry Pi modules and add-onsRegulated supply for sensors, wireless modules, and small motorsDIY electronics, prototyping, and embedded system projectsRobotics, battery-powered circuits, and single-board computer peripheralsHow to UseConfirm the module version (3.3V or 5V) before connecting to your device.Supply a DC input voltage that is higher than the chosen output plus the AMS1117 dropout (typically ensure at least 1V margin).Connect input and ground to your power source, and take regulated output from the module’s output pins.For higher continuous currents, provide adequate cooling or a heatsink to avoid thermal shutdown.Double-check polarity and voltage to protect sensitive microcontrollers and sensors.Thermal and Safety TipsThe AMS1117 is a linear regulator; power dissipation increases with input-output voltage difference and current. Minimize excess input voltage when drawing higher currents.At currents approaching 800mA the module can become hot. Use a heatsink or ensure airflow for sustained loads.Avoid connecting the wrong voltage version to boards that expect a specific rail voltage; verify 3.3V vs 5V before powering sensitive devices.Compatibility and Prototyping TipsBreadboard-friendly pin spacing makes this module ideal for rapid prototyping.Works seamlessly with Arduino, ESP8266, ESP32, Raspberry Pi HATs and small sensor modules when correct voltage is selected.Use decoupling capacitors close to the powered module or sensor for best transient performance.Note: Images are for illustration purposes only. Verify module version and connections before use. SKU: N/A Categories: Boards, Modules and Accessories, Buck, Boost Converters and Regulators Tags: 3.3V Regulator, 5V Regulator, AMS1117, Arduino Power Module, DIY electronics, ESP32 Power Supply, ESP8266 Voltage Regulator, LDO Regulator, Power Supply Module, Raspberry Pi Regulator, Voltage Regulator Module College Road Electronics4.85 (317 Reviews)
