Description
The LM2576R-3.3 is a high-efficiency step-down (buck) switching regulator designed to provide a stable, fixed 3.3V output from a higher input voltage. Capable of delivering up to 3A of output current, it is an ideal workhorse for powering digital logic circuits, microcontrollers, and other electronic modules that require a steady, reliable 3.3V supply.
Unlike linear regulators that can waste significant energy as heat, the LM2576R switching design is much more efficient, allowing it to handle higher power requirements without needing massive heatsinks. Housed in a through-hole-5 package, it is easy to install on breadboards, perfboards, or custom PCBs, making it a favorite for both professional engineering designs and hobbyist DIY projects.
Key Features
- Fixed 3.3V Output: Pre-configured for a standard logic voltage, eliminating the need for external voltage-setting resistors.
- 3A Current Capacity: Provides ample power for demanding projects, including motor drivers, wireless modules, and complex microcontroller arrays.
- Efficient Switching Design: Operates at 52kHz, offering superior energy efficiency compared to traditional linear regulators.
- Easy Through-Hole Mounting: Simple to solder and mount, perfect for prototyping and ruggedized board designs.
- Built-in Protection: Includes internal current limiting and thermal shutdown to protect the regulator and your circuit from overload or short-circuit damage.
Application
- Microcontroller Power: Ideal for powering 3.3V platforms like ESP32, STM32, or ARM-based development boards.
- Embedded Systems: Provides stable voltage for peripheral devices, sensors, and communication interfaces.
- DIY Power Supplies: Perfect for building your own benchtop power supply or custom power modules for home automation.
- Consumer Electronics: Efficiently converts battery or wall-adapter power for stable operation of internal logic circuits.
- General Hobbyist Projects: A reliable, high-current regulator for anyone needing a solid 3.3V source for their electronic experiments.
Package Includes
- 1 x LM2576R-3.3 3.3V 3A Step-Down Switching Regulator (TO-220/Through-Hole-5)
Technical Specifications
| Parameter | Specification |
|---|---|
| Device | LM2576R-3.3 |
| Output Voltage | 3.3V (Fixed) |
| Max Output Current | 3A |
| Switching Frequency | 52 kHz |
| Package Type | Through-hole-5 (TO-220 style) |
| Shipping Weight | 0.001 kg |
| Shipping Dimensions | 4 × 4 × 1 cm |
Note: Product images are shown for illustrative purposes only and may differ from the actual product. For complete technical parameters, please refer to the official device datasheet.
