LM2596 DC-DC Adjustable Step Down Power Supply Module With Digital Control Features:
Input voltage range: 4.5-28V (NOTE: 28V to limit the maximum voltage， be sure to use too aggressive otherwise damaged) Output voltage range: 1.3V-25V (step-down mode， the input must be greater than the output voltage of 2V and above) Output Current: 1.5A continuous output Output Power: 15W Maximum Ripple frequency: 150Khz around Peak to peak ripple: 100mV around Size: 62mm X 26mm X 14mm Voltmeter accuracy: !#!amp!*!plusmn; (5 !#!amp!*!permil; + 1 words) Static power consumption: typically around 20ma (output voltage to the input voltage and the digital color is closely related to the actual current will exist deviation) IN +: Enter the positive IN-: Enter negative OUT +: positive output OUT-: output negative Input and output voltage can be displayed alternately. Power status can be freely defined. With key shutdown feature reduces power consumption. ON \/ 0FF output operation， high-level representatives of closed output， low-level representatives to open the output. NOTE: HIGH (3.3V) maximum output current 5ma

Working :
1. Output voltage mode: boot default display xx.x， led off
2. Input voltage mode: press button switch to xx.x， led on
3. Alternating mode: press button again input\/output voltage alternately display (3s)， press button Again switch to output voltage display.

Package Included:
1 x lm2596 mould