AC-DC 5V 700mA 3.5W Power Supply Buck Converter (New)

Description

Product Overview

The AC-DC 5V 700mA Power Supply Buck Converter is a compact, high-efficiency switch-mode power supply (SMPS) module designed to convert high-voltage AC mains power (85V–265V AC) into a stable, low-voltage DC output suitable for powering microcontrollers, sensors, LED strips, and other 5V electronic devices . Rated at 3.5 Watts (5V @ 700mA), this industrial-grade module eliminates the need for bulky traditional transformers, providing a safe, reliable, and space-saving power solution for embedded projects and consumer electronics.

Unlike simple linear regulators that waste energy as heat, this module uses advanced switching technology to achieve up to 85% efficiency while running cool . Its built-in isolation transformer ensures that the low-voltage DC output is completely isolated from the hazardous AC input, protecting your sensitive circuits and improving user safety .

This “New” version is built with modern protection features including overcurrent protection (OCP), short-circuit protection (SCP), and over-temperature protection (OTP) , ensuring automatic shutdown under fault conditions to prevent damage to the module and your connected devices . Measuring only about 30x20x18mm, its tiny footprint makes it perfect for embedding into IoT devices, Arduino projects, LED drivers, and smart home systems where space is at a premium .

Key Features

• Compact High-Power Density: Converts 220V wall power directly to 5V DC in a module the size of a postage stamp (approx. 30x20x18mm), replacing bulky traditional power supplies .

• Industrial-Grade Safety: Features high and low voltage isolation, built-in temperature protection, overcurrent protection, and short circuit protection for reliable operation in DIY and commercial settings .

• Wide Input Voltage Range: Accepts global mains voltage from 85V to 265V AC (50/60Hz), making it compatible with any standard household outlet worldwide .

• Stable Regulated 5V Output: Provides a clean, stable 5V DC output (±0.2V accuracy) thanks to the built-in 431 precision voltage reference circuit .

• High Efficiency and Low Heat: With an efficiency rating of up to 85% (typical) , it minimizes energy waste and heat generation, allowing for longer operation in enclosed spaces .

• Multiple Protections: Fully protected against short circuits, overloads, and over-temperature events. The output automatically recovers once the fault is resolved or the device cools down .

• Low Ripple and Noise: Engineered for stable DC power with a ripple and noise specification of 60mV, ensuring clean power for sensitive electronics .

• Easy PCB Mount Integration: Designed with standard pin headers, it can be soldered directly onto a PCB or fixed with glue for permanent installation in appliances and automation systems .

Technical Specifications