Description
Product Overview
The LM2596 3A Buck Converter Module with Digital Display is a high-precision, adjustable step-down switching regulator that combines the proven performance of the Texas Instruments LM2596 chip with a convenient built-in 3-digit LED voltmeter. This all-in-one module allows you to monitor both input and output voltages in real-time, eliminating the need for a separate multimeter during voltage adjustment .
Based on the industry-standard LM2596 switching regulator, this module efficiently converts higher DC voltages (from 4.0V to 40V) into a lower, continuously adjustable output ranging from 1.25V to 37V . With a maximum output current of 3A and conversion efficiency up to 92%, it runs much cooler and wastes significantly less power than traditional linear regulators, making it ideal for battery-powered or enclosed applications .
The standout feature of this module is its 3-digit 7-segment display, which can show either input or output voltage at the press of a button. This is particularly useful for applications like powering 12V LED strips from a 24V supply, charging 5V devices from a 12V battery, or creating a custom variable benchtop power supply without needing external measurement tools .
Key Features
-
Integrated 3-Digit LED Display: Shows input or output voltage in real-time with a push-button switch, eliminating the need for an external multimeter during adjustment
-
Adjustable Output Voltage: Continuously adjustable from 1.25V to 35V (37V max) via onboard precision multi-turn potentiometer
-
Wide Input Voltage Range: Accepts DC input from 3.2V to 40V, compatible with 5V, 12V, 24V, and 36V systems
-
3A High Output Current: Capable of delivering up to 3A peak output current. For continuous operation, 2A is recommended; a heatsink is advised for loads above 2A or power exceeding 10W
-
High Conversion Efficiency: Up to 92% efficiency with 150kHz switching frequency, minimizing power loss and heat generation
-
Low Output Ripple: Output ripple ≤30mV, suitable for sensitive electronics like microcontrollers and sensors
-
Built-in Protection: Includes thermal shutdown and current limit protection to safeguard the module and your connected devices
-
Display Self-Calibration: The voltmeter can be calibrated to your multimeter for precise readings
-
Compact Design: Small PCB footprint (approx. 66mm × 36mm × 12mm) with screw terminals for easy, solderless wiring
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Input Voltage | DC 3.2V – 40V (Vin must be > Vout + 1.5V) |
| Output Voltage | DC 1.25V – 35V (Continuously adjustable) |
| Output Current (Peak) | 3A (Short duration) |
| Output Current (Continuous) | 2A Recommended (Heatsink needed above 2A) |
| Switching Frequency | 150 kHz |
| Conversion Efficiency | Up to 92% |
| Output Ripple | ≤ 30mV |
| Voltmeter Range | 0 – 40V, Accuracy adjustable |
| Rated Power | 10W – 20W (Heatsink recommended above 15W) |
| Operating Temperature | -45°C to +85°C |
| Module Dimensions | Approx. 66mm × 36mm × 12mm |
Reviews
There are no reviews yet.