Switching Power Supply 3.3V, 5V, 12V, 3A with LM2596

LM2596 is DC to DC step down voltage regulator 3A
Wide input voltage 8Vdc to 40Vdc.

  • LM2596-3.3 (3.3Vdc output)
  • LM2596-5.0 (5Vdc output)
  • LM2596-12 (12Vdc output)
  • LM2596-ADJ (1.23Vdc to 37Vdc output)
Switching PS 5 volts , 3 amper
Print Control board for power supply


  • 680uF 50V electrolytic capacitor
  • 1N5824 high speed schottky diode (5A)
  • Output 100V electrolytic capacitor (higher voltage, lower ESR)
  • 330uF (for LM2596-3.3, LM2596-5.0)
  • 180uF (for LM2596-12)

wire coil inductor

  • 33uH (for LM2596-3.3, LM2596-5.0)
  • 68uH (for LM2596-12)