AMS1117-1.5 Low-Dropout Linear Voltage Regulator ⚡

The AMS1117-1.5 is a fixed 1.5 V low-dropout (LDO) linear voltage regulator designed to deliver a clean, stable rail for sensitive electronics. With up to 1 A output current, ±1% accuracy, and integrated protection features, it’s ideal for powering low-voltage logic and modules in Arduino, Raspberry Pi, and embedded microcontroller projects.

Key Features ✨

• Low dropout voltage: Ensures reliable regulation even with a small input–output differential (typically up to 1.3 V dropout at maximum load).
• High output current: Supplies up to 1 A for a wide range of electronics components and modules.
• Built-in protection: Integrated thermal shutdown and current limiting safeguard your circuitry.
• High precision: Fixed 1.5 V output with ±1% accuracy for dependable performance.
• Simple design-in: Minimal external components; ideal for breadboards, DIY electronics, and production designs.

Electrical Specifications 📐

• Output Voltage: 1.5 V (fixed)
• Maximum Output Current: 1 A
• Dropout Voltage: 1.3 V at maximum load
• Accuracy: ±1%
• Operating Temperature: -40°C to +125°C

Note: Ensure the input voltage meets VIN ≥ VOUT + Vdropout. At 1 A, plan for at least ~2.8 V input to maintain a regulated 1.5 V output, and keep within the device’s maximum input rating (see datasheet).

Design Guidelines 🔧

• Input/Output capacitors: Use at least 10 µF on both input and output, placed close to the regulator pins. Choose suitable low-ESR capacitors per the datasheet for stable operation.
• Thermal management: Power dissipation is (VIN − VOUT) × IOUT. Provide adequate copper area/heat sinking, especially near 1 A load.
• Efficiency considerations: As a linear regulator, efficiency is approximately VOUT/VIN. For battery-powered or high step-down ratios, consider a switching regulator; use the AMS1117-1.5 for low-noise, simple rails.

Typical Applications 🧰

• Microcontroller and logic rails: Provide a clean 1.5 V supply for cores, logic ICs, and low-voltage digital electronics.
• Prototyping with Arduino and Raspberry Pi: Create a dedicated 1.5 V rail from 3.3 V or 5 V sources for sensors, modules, and mixed-signal circuits.
• IoT devices and embedded systems: Stable power for low-voltage modules and communication chipsets.
• Consumer electronics: Suitable for cameras, handhelds, and other devices requiring a regulated 1.5 V line.

Compatibility & Use Cases 🤝

Works seamlessly in electronics modules, development boards, and custom PCBs. Ideal for engineers and hobbyists who need a robust 1.5 V LDO regulator in Arduino/Raspberry Pi ecosystems or general electronics components design.

What’s Included 📦

AMS1117-1.5 Voltage Regulator (fixed 1.5 V, up to 1 A). Package style may vary by supplier; refer to the product listing or datasheet for details.

Datasheet 📝

Refer to the official AMS1117 datasheet for pinout, absolute maximum ratings, recommended capacitor types, and typical application circuits.