Ac-dc 3.5w Isolated Switching Power Supply Module - 5v 700ma / 9v 500ma / 12v 450ma
The AC-DC 3.5W Precision Buck Converter Module is a compact, high-performance isolated switching power supply designed for space-constrained electronics projects. Whether you are powering a microcontroller, an IoT device, or a smart home sensor, this module allows you to step down mains voltage (AC) directly to a stable DC output (5V, 9V, or 12V) without the need for bulky transformers.
This module features a bare-board design with high efficiency, low power consumption, and low output ripple. It comes equipped with built-in protection against over-current, overload, and short circuits, ensuring the safety of your connected components.
Key Features:
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Wide Input Range: Supports AC 85V-265V or DC 110V-370V input, making it versatile for various grid standards.
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Compact Footprint: Ultra-small size allows for easy integration into custom PCB designs or small enclosures.
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Safety Isolation: Fully isolated input and output for safer operation.
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High Reliability: Built-in temperature protection, over-current protection, and short-circuit protection.
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Stable Output: High efficiency with low output ripple and noise (<60mV).
Technical Specifications:
| Feature | Specification |
| Input Voltage | AC 85 ~ 265V 50/60Hz |
| Output Power | 3.5W (Max) |
| Output Voltage Options | 5V, 9V, or 12V (Select Variation) |
| Output Current (5V) | 700mA |
| Output Current (9V) | 500mA |
| Output Current (12V) | 450mA |
| Output Voltage Accuracy | ±1% |
| Working Temperature | -20°C to +60°C |
| Relative Humidity | 40-90% RH |
| Efficiency | ~80% |
Applications:
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Powering Raspberry Pi, Arduino, or ESP8266/ESP32 directly from mains.
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Smart home automation devices.
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Industrial control equipment.
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LED drive power.
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DIY electronics power supply repair.
Package Includes:
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1 x AC-DC Step Down Module (Selected Voltage Variant)