Description
Product Overview
The LM2596 DC-DC Buck Converter Module is a high-performance, fixed-output step-down switching regulator designed to convert higher DC voltages (such as 24V) into a stable 5V output. Based on the industry-standard LM2596-5.0 chip from Texas Instruments, this module provides a simple, reliable, and efficient solution for powering 5V logic systems, microcontrollers, USB devices, and other electronics from automotive batteries, industrial power rails, or higher voltage power supplies .
Unlike traditional linear voltage regulators that dissipate excess energy as heat, this switching regulator utilizes 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 a Raspberry Pi, Arduino, multiple sensors, or an LED strip simultaneously .
The fixed 5V output version eliminates the need for manual voltage adjustment—simply connect your input power and the module provides a precise, regulated 5V output. This makes it a perfect choice for applications where a stable, preset voltage is required without the risk of accidental misadjustment.
Key Features
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Fixed 5V Output: Factory-preset to deliver a precise 5V output, eliminating the need for manual voltage adjustment and potential misconfiguration .
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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 12V automotive, 24V industrial, 36V solar panel systems, and more .
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3A High Output Current: Capable of delivering up to 3A of continuous output current. For loads above 2A, a heatsink is recommended to maintain optimal performance .
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Fixed 150kHz Switching Frequency: Allows 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 sensors .
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Requires Only 4 External Components: Simple design with minimal external components, making the module compact and reliable .
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Industrial Temperature Range: Designed to operate reliably from -40°C to +85°C, suitable for a variety of environments .
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Input Voltage | DC 4.5V – 40V (Typical: 12V, 24V, 36V) |
| Output Voltage | Fixed 5V DC (±4% tolerance) |
| Output Current | 3A (Max), 2A – 2.5A Recommended (with heatsink >2A) |
| Switching Frequency | 150 kHz |
| Conversion Efficiency | Up to 92% (Typical) |
| Output Ripple | ≤ 30mV (Typical) |
| Line Regulation | Excellent (Fixed output version) |
| Load Regulation | Excellent (Fixed output version) |
| Quiescent Current | Typically 5mA – 10mA (Standby: 80µA) |
| Protection Features | Thermal Shutdown, Current Limit |
| Operating Temperature | -40°C to +85°C |
| Module Dimensions | Approx. 43mm × 21mm × 14mm |
| Weight | Approx. 10g – 15g |
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