Step-down Power Supply Module for DC-DC Buck Converter LM2596S



The LM2596S DC-DC Buck Converter is designed to efficiently convert higher input voltages to lower output voltages, eliminating the need for an additional power supply. This versatile step-down power module has an adjustable voltage range and can handle a load of up to 3A with a high level of efficiency. However, it’s important to note that when operating at currents exceeding 2.5A or output power greater than 10W, the addition of a heatsink is recommended to prevent overheating.


  • Input Voltage: 3 to 40 V
  • Output Voltage Range: 1.23 to 37 V
  • Max Output Current: 3 A
  • Adjustment: 25-Turn Trimpot for precise voltage regulation
  • Efficiency: Up to ~93%
  • Switching Frequency: 150 kHz
  • Built-In Protection: Thermal shutdown and current limit features enhance safety
  • Dimensions:
    • Length: 43.2 mm (1.701″)
    • Width: 21 mm (0.827″)
    • Height: 14 mm (0.551″)
  • Weight: 11.23 g (0.396 oz)

This module’s compact dimensions and lightweight design make it suitable for various applications where efficient voltage regulation and step-down conversion are required. The 25-turn trimpot allows for precise adjustment of the output voltage within the specified range. Additionally, the built-in thermal shutdown and current limit features provide protection against potential issues, ensuring the reliable performance of the LM2596S DC-DC Buck Converter.


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