LM2596S Buck Voltage Regulator, 3 Potentiometer, 3A

The DC-DC Step-down (buck) Adjustable Power Supply Module is based on monolithic integrated circuit LM2596, ideally suited for easy and convenient design of a step−down switching regulator (buck converter). It is capable of driving a 3.0A load with excellent line and load regulation.

The unit has 3 potentiometers for adjusting. The potentiometer near the output stage is intended to limit the output current, turning clockwise increases the amount of current that can be output. The potentiometer in the middle is a charge control that controls when the charge indicator led goes off, turning it clockwise increases the output current level that the ch led turns off, in other words, the ch led turns off at a higher current. The led closest to the out+ port is cc indicator led and it turns on when this lm2596 module is operating in cc mode, that is, when the maximum current set by current control is being output.

Quick Spec

• Input Voltage: 3V - 40V (1.5V higher than the output at least)
• Adjustable Output Voltage: 1.5V - 35V
• Output Current: 2A (3A Max)
• Max. Efficiency: 92%
• Output Ripple: 100mV
• Switching Frequency: 65KHz
• Operating Temperature: -45 to +85^oC
• IN-IN + input Positive Input Negative
• Positive output OUT + OUT-output negative
• Dimension: 43 x 21 x 14mm
• Net Weight: 15g

Board Layout