LM2596 DC-DC Step-Down 3.2-35V 3A Buck Converter, 1.25-32V Output

LM2596 DC-DC Step-Down 3.2-35V 3A Buck Converter, 1.25-32V Output

The LM2596 step-down converter is a reliable DC/DC module, ideal for powering a wide range of electronic devices, including microcontroller-based circuits. It works well with Arduino, ESP8266, ESP32, and Raspberry Pi. Thanks to a wide input voltage range of 3.2V to 35V and a precisely adjustable output voltage of 1.25V to 32V, this module is a versatile power solution. Based on the popular LM2596S-ADJ controller, it delivers a maximum output current of 3A (with a heatsink) and achieves conversion efficiency of up to 92%.

Key specifications

• Controller: LM2596S-ADJ
• Input voltage: 3.2V - 35V DC
• Output voltage: 1.25V - 32V DC (smoothly adjustable)
• Maximum output current: 3A (heatsink required)
• Maximum ripple: 30mV
• Switching frequency: 150KHz
• Maximum conversion efficiency: 92%
• Load regulation: ±0.5%
• Voltage regulation: ±2.5%
• Operating temperature: -40°C to +85°C
• Module dimensions: 43mm x 21mm x 14mm

Example applications

• Powering logic circuits and microcontrollers (Arduino, Raspberry Pi, ESP32)
• Stepping down voltage in DIY projects and hobby robotics
• Stable power for sensitive audio circuits
• Powering high-power LED lighting systems
• Supplying power to DC motor control circuits

Benefits

• Versatility - smooth output voltage adjustment lets you match power to many different circuits.
• High efficiency - up to 92% conversion minimizes energy lost as heat.
• Compact size - small board (43x21x14 mm) fits tight enclosures.
• Stable performance - low ripple (30mV) helps powered devices run safely and reliably.
• Broad compatibility - ideal for popular platforms such as ESP8266, ESP32, and Arduino.