Input: DC 27V (maximum) Output: 5V/12V (optional) Current output: 8A (maximum) Static current: 0.1mA Conversion efficiency: up to 95% Low ripple: 800KHZ Over-current hiccup protection Built-in over-temperature protection Operating temperature: -40°C+85°C Module interface: VIN+: DC input positive 6V-27V (need to be higher than the output 1V or more) GND: DC input negative terminal, with the output negative connection + (OUT +): DC output positive pole -GND: DC output negative terminal, connected with the negative terminal of the input. Note for use: & 9670; The input of the product should be greater than the output voltage, and it is better to keep the voltage difference above 1V, and the input should not be reversed, and the board should be burned when it is reversed. & 9670; When wiring, it is best to disconnect the power supply, otherwise when the voltage is high, it is easy to spark, so there will be a certain risk of striking the chip, breakdown chip. & 9670; Wiring should not be too fine, ensure that the wire can withstand the corresponding current. & 9670; Inductive loads should be well protected to avoid excessive reverse electromotive force beyond the range of the chip. & 9670; The higher the power of the module, the closer the current is to the maximum current. Pay attention to heat dissipation when using the module. & 9670;When there is no additional heat dissipation, the continuous use current is recommended to be below 4.55A, more than 4.55A needs additional heat dissipation, otherwise it will overheat to protect the output. & 9670; The use of voltage is recommended to be below 26V, should be if the supply voltage is not very stable, spike voltage more than 27V will trigger the chip internal over-voltage protection, for stable operation, appropriate to leave some margin.