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LM2596 Step-Down Buck Converter 3A DC-DC with Display and Voltmeter
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Description
Product description: LM2596 Step-Down Buck Converter 3A DC-DC with Display and Voltmeter
Universal LM2596S DC-DC buck converter with adjustable output voltage in the range of 3.2-35V and maximum current up to 3A, featuring a built-in on-board voltmeter. The module is ideal for powering electronic circuits, including Arduino, ESP8266, ESP32, and Raspberry Pi.
The voltmeter allows measuring both input and output voltage. You can easily switch between and monitor both voltages using a convenient switch on the board.
The module provides precise output voltage regulation and is protected against short circuits, which significantly improves safety in use. Remember that this is a step-down voltage converter, so the output voltage cannot exceed the input voltage.
Key technical specifications
- Input voltage: 3.2V to 40V
- Output voltage: 3.2V to 35V (always lower than input)
- Maximum output current: 3A (cooling required), up to 2A without a heatsink
- Controller: proven LM2596 IC
- Efficiency: below 90% (depends on load)
- Switching frequency: 150 MHz
- Board dimensions: 66 x 35 x 15 mm
- Weight: 23 g
Pinout (connections)
- IN+ - positive input voltage terminal
- IN- - negative input voltage terminal (ground)
- OUT+ - positive output voltage terminal
- OUT- - negative output voltage terminal (ground)
Example applications
- Powering microcontroller modules (Arduino, Raspberry Pi)
- Stepping down voltage in robotics and automation projects
- Prototyping electronic circuits on breadboards
- Powering IoT circuits (ESP32, ESP8266)
- Building portable power supplies and chargers with adjustable voltage
Benefits
- Convenient voltage readout - the built-in voltmeter allows quick checks without external meters
- Simple operation - easy switching between input and output measurement with one button
- Circuit safety - integrated short-circuit protection protects connected components
- Versatility - wide input and output voltage range for many projects
- Easy mounting - four 3 mm mounting holes simplify installation in enclosures
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