LM2596S with SMD LED DC-DC Step-Down Power Supply

  1. Input voltage: 3-40V
  2. Output voltage: 1.5-35V(Adjustable)
  3. Output current: Rated current is 2A, maximum 3A
  4. Switching Frequency: 150KHz
  5. Operating temperature:Industrial grade (-40 to +85 )
  6. Conversion efficiency: 92%(highest)


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It is LM2596 HV DC-DC Buck Converter with voltage rating 4.5-40V to 3-35V. This step down power module is adjustable with a potentiometer.


  1. Adjustment method: first correct input power (between 4.5-50V) then multimeter to monitor the output voltage and adjust potentiometer (usually clockwise turn boost, buck turn counterclockwise),
  2. Input: IN+ input positive IN- input negative
  3. Output: OUT+ output positive OUT- output negative
  4. Static power consumption is only about 6mA.
  5. Connection: Welding, plus pin can be directly soldered after the PCB.
  6. Short circuit protection: current limiting, thermal protection, self-recovery.
  7. Non-isolated step-down (BUCK) switching regulator.
  8. Short circuit protection: Current limiting, self-recovery
  9. Potentiometer adjustment direction is as Clockwise (increase) and Anti-clockwise (decrease)
  10. Non-synchronous rectification

Package Includes : 

1 x LM2596 HV DC-DC Buck Converter 4.5-40V to 3-35V



Output current

Rated current is 2A , maximum 3A(Additional heatsink is required)

Switching Frequency


Operating temperature

Industrial grade (-40 to +85 )

Conversion efficiency


Load Regulation

± 0.5%

Voltage Regulation

± 0.5%

Dynamic Response speed

5% 200uS

Shipping Info


11.0000 g


45 × 20 × 14 mm