Product Overview

AMS1117-3.3 is a high-performance positive low-dropout linear regulator designed for stable 3.3V output, belonging to the fixed-voltage variant of the AMS1117 series. Featuring a three-terminal structure, it supports up to 1A output current with low dropout, high regulation, and comprehensive protection functions, making it ideal for consumer electronics, industrial control, IoT devices, and more, providing reliable voltage regulation solutions for circuits.

Key Features

• Precise 3.3V Output：Voltage accuracy within ±1% (typical), minimal fluctuation across 0-1A current range, suitable for powering precision electronic components.
• Low Dropout Design：Maximum dropout voltage 1.3V (at 1A output), more energy-efficient than traditional regulators, extending battery life in portable devices.
• Comprehensive Protection：Integrated overcurrent protection (current limit 900mA-1.5A) and thermal shutdown; auto-shuts down at >160℃ to prevent damage.
• Superior Stability：Line regulation ≤0.2% (4.75-12V input), load regulation ≤0.4% (0-1A), ensuring stable output amid input/load changes.
• Wide Temperature Range：Operating junction temperature -40℃ to 125℃, compatible with industrial equipment and outdoor electronics in extreme environments.

Technical Specifications

Typical Applications

• Consumer Electronics：In smartphones and tablets, AMS1117-3.3 powers sensors and RF modules with stable 3.3V. Its low dropout reduces battery drain, extending device runtime.
• Industrial Control Modules：Suitable for PLCs and sensor nodes; wide temperature range withstands factory floor fluctuations, while overcurrent protection resists motor startup surges.
• IoT Terminals：Used in smart locks and environmental monitors, the compact SOT package saves PCB space. With lithium battery power, its 1A output handles Wi-Fi module peak currents.
• Development Boards：Commonly used as 3.3V power modules for Arduino/Raspberry Pi, requiring only two filter capacitors (10μF input, 22μF output) for stable operation, simplifying circuit design.
• Automotive Electronics：In car navigation and OBD devices, it tolerates -40℃ cold starts; thermal protection handles engine bay heat, ensuring stable driving data collection.

Why Choose AMS1117-3.3?

• Cost-Effective：Achieves high-precision regulation at low cost, replacing discrete component solutions to reduce material and soldering expenses.
• Drop-In Replacement：Pin-compatible with LM1117 and similar regulators, enabling easy PCB upgrades without redesign.
• Wide Input Compatibility：4.75-12V input works with USB (5V), lithium batteries (7.4V), and car power (12V).
• Long Lifespan：MTBF exceeds 1 million hours, meeting industrial-grade durability requirements.
• Global Supply Chain：Stocked by major distributors, ensuring low bulk pricing and short lead times.

SUNTOP COMPANY INTRODUCTION

Founded in 2000, Suntop is one of the leading global distributors of electronic components, dedica ted to providing comprehensive procurement and supply chain services to the global electronics manufacturing industry. Our services include distribution, spot trading, PPV cost-saving projects, and inventory management. We not only offer high-quality products but also strive to assist our clients in achieving optimal solutions with minimal time and cost.
As a trusted partner for numerous OEMs, ODMs, CEMs, and EMS companies worldwide, our professional team manages millions of component records from thousands of trading partners across dozens of countries daily through our company database. We maintain close business relationships with major factories and distributors in North America, Europe, and Asia to ensure that our clients stay ahead in a highly competitive market.