This LM2596 Step Down Module is based on LM2596S-ADJ chip is one of the most cheap, easy to use, step down buck converter with adjustable output voltage, with high current output of upto 3A. This LM2596 step down module has a wide input voltage range from 4.5V to 35V. The LM2596 also has internal thermal shutdown, and current limit protection. It operates at switching frequency of 150 Khz, and is highly efficient with upto 73% Efficiency @ 12V 3A output.

The output voltage of the module is adjustable according to the need by using the on board Potentiometer. As its a step down buck converter, the input voltage must higher than the required output voltage. The input voltage must be always 1.5V higher than the required output voltage.

Features: 

• With voltage display function. 
• Button to switch measurement of the input or output voltage, and LED indicates 
• the current measurement of the input or output voltage.
• High efficiency,150 kHz fixed frequency internal oscillator.
• Thermal shutdown and current limit protection
• The nixie tube can be turned off by another button.
• Mentioned in these states are able to be memorized, is not lost even if the 
• power is disconnected.
• Continuously adjustable output voltage range of 1.25V -37V, 4-40V input voltage
• Range. (The input voltage is at least high than the output voltage of 1.5V)

Specifications:

• Input voltage range: 4-40 v(40 v to limit the highest voltage)
• Output voltage range:1.25V~37V (decompression mode, input output must be greater than 2 V above)
• Output current: 2 A continuous output
• Output power: the maximum 15W
• The displayed accuracy:± 0.05V
• Display range:range: 0 - 40V.( Note: in order to voltage display more accurate, 
• please ensure that the input voltage is higher than 4V)
• Grain wave peak: 100 mv
• Voltmeter precision: ± 5 ?
• Static power: 20 ma (and input voltage output voltage and digital tube color is 
• closely related to the actual current will exist deviation)
• IN + : input positive/IN - : input negative
• OUT + : output positive/OUT - : output negative
• Size:7cm*4cm
• Weight: 31g