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LM2596S DC-DC Step-Down 3-40V 3A Buck Converter - Step-Down Voltage
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Description
LM2596S DC-DC Step-Down 3-40V 3A Buck Converter
LM2596S Step-Down supports input voltage in the range 3 - 40V and output voltage 1.5 - 35V. The module offers smooth voltage and current regulation via a multi-turn potentiometer and practical operation status indication with LEDs. Maximum output current is 3A (heatsink required). Circuit efficiency reaches ~90%, and the fixed switching frequency is 150 kHz. The module is ideal for powering microcontrollers, including Arduino, ESP8266, ESP32, and Raspberry Pi.
Depending on the set voltage and load, using a heatsink is recommended to avoid overheating the circuit. The heatsink is not included in the kit.
Key technical specifications
- Input voltage: 3 - 40V
- Output voltage: 1.5 - 35V
- Maximum current: 2A (up to 3A with a heatsink)
- Efficiency: ~90%
- Fixed switching frequency: 150 kHz
- Dimensions: 43 x 21 x 13 mm
- Regulation: smooth voltage and current regulation (multi-turn potentiometer)
- Indication: built-in LEDs
Example applications
- Powering electronic circuits and microcontrollers (Arduino, ESP32, Raspberry Pi)
- Powering high-power LEDs
- Charging rechargeable battery cells
- Voltage step-down in DIY and robotics projects
- Voltage stabilization in emergency backup power systems
Benefits
- Versatility: wide input and output voltage range allows use in many projects
- Precision: multi-turn potentiometer enables very accurate setting of operating parameters
- High efficiency: ~90% efficiency minimizes energy losses
- Compact size: small footprint (43 x 21 x 13 mm) eases mounting in tight enclosures
- Ease of use: built-in LEDs simplify monitoring of device operating status
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