Description
Product Overview
The LM2596 3A Adjustable Buck Converter Module is a high-performance, step-down switching regulator based on the industry-standard LM2596 chip from Texas Instruments . This module efficiently converts higher DC voltages (such as 24V, 12V, or 36V) into a lower, stable, and continuously adjustable output voltage, making it an essential tool for powering a wide variety of electronic devices .
Unlike traditional linear voltage regulators that dissipate excess energy as heat, this switching regulator uses Pulse Width Modulation (PWM) technology to achieve conversion efficiencies of up to 92% . This means it runs much cooler and wastes significantly less power, making it ideal for battery-powered or enclosed applications. The module is capable of delivering up to 3A of continuous output current, enough to power an Arduino, Raspberry Pi, a high-power LED strip, or other 5V/12V logic systems .
The module features a simple three-terminal interface and an onboard precision potentiometer for adjusting the output voltage. This makes it a favorite among electronics hobbyists, educators, and professionals for creating custom power supplies, retrofitting old electronics, and developing IoT devices .
Key Features
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High-Efficiency Step-Down Conversion: Utilizes the LM2596 switching regulator to achieve up to 92% efficiency, minimizing power loss and heat generation compared to linear regulators .
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Wide Input Voltage Range: Accepts DC input from 4.5V to 40V, making it compatible with common 5V USB, 12V automotive, 24V industrial, and even 36V solar panel systems .
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Adjustable Output Voltage: Provides a continuously adjustable output from 1.25V to 35V via an onboard precision potentiometer, allowing you to set exactly the voltage your project needs .
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3A High Output Current: Capable of delivering up to 3A of output current. For loads above 2.5A, a heatsink is recommended to maintain optimal performance .
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High Switching Frequency: Operates at a fixed 150kHz internal oscillator, allowing for smaller-sized filter components and lower output ripple compared to older regulator designs .
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Comprehensive Protection: Includes built-in thermal shutdown and current-limit protection to safeguard the module and your connected devices under fault conditions .
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Low Output Ripple: Delivers clean power with output ripple typically less than 30mV, suitable for sensitive electronics like microcontrollers and audio equipment .
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LED Indicator: An onboard LED provides clear visual confirmation when the input power is applied and the module is operational .
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Industrial Temperature Range: Designed to operate reliably from -45°C to +85°C, suitable for a variety of environments .
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Input Voltage | DC 4.5V – 40V (Typical: 5V, 12V, 24V, 36V) |
| Output Voltage | DC 1.25V – 35V (continuously adjustable) |
| Output Current | 3A (Max), 2A – 2.5A Recommended (with heatsink >2A) |
| Switching Frequency | 150kHz |
| Conversion Efficiency | Up to 92% |
| Output Ripple | ≤ 30mV (Typical) |
| Load Regulation | Excellent (Line and load regulation specifications) |
| Operating Temperature | -45°C to +85°C |
| Module Dimensions | Approx. 43mm × 21mm × 14mm |
| Weight | Approx. 10g – 15g |
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