LM2596 DC-DC 4.5-40V 3A adjustable step-down power Supply module Blue

SKU: 0059


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DC-DC Buck Converter Step Down Module LM2596 Power Supply is a step-down(buck) switching regulator, capable of driving a 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version. The LM2596 series operates at a switching frequency of 150kHz, thus allowing smaller sized filter components than what would be required with lower frequency switching regulators. This is an LM2596 DC-DC buck converter step-down power module with the high-precision potentiometer, capable of driving a load up to 3A with high efficiency, which can work with Freeduino UNO, other mainboards, and basic modules. When the output current keeps greater than 2.5A (or output power greater than 10W), please add a heat sink to it. This device is internally compensated to minimize the number of external components to simplify the power supply design. Since LM2596 converter is a switch-mode power supply, its efficiency is significantly higher in comparison with popular three-terminal linear regulators, especially with higher input voltages. The LM2596 operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators.


Input Voltage

4 to 35V

Output Voltage

1.25 to 30V

Output Current

3A (Max)

Conversion Efficiency


Switching Frequency


Output Ripple

30mA (maximum)

Load Regulation

± 0.5%

Voltage Regulation

± 0.5%

Dynamic Response speed

5% 200uS

Operating Temperature

-40 to +90°C


  • Non-isolated step-down (BUCK) switching regulator
  • Short circuit protection: Current limiting, self-recovery
  • Potentiometer adjustment direction is as Clockwise (increase) and Anti-clockwise (decrease)
  • Non-synchronous rectification

Package Included:

1 x LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Power Supply Step Down Module


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