ITEM NAME:3pcs XL6009 400KHz 4A Switching Current Boost Module DC-DC Buck-Boost Module Descriptio n Description: Auto start voltage will be pulled down to 7V less or smaller engine at high speed when the voltage up to 15V or higher. For 12V electrical work hard at work, this automatic buck module solves this problem, regardless of the input voltage is 5V or 12V or 32V, the output can be stabilized at 12V. Wide input voltage 5V ~ 32V; Wide Output Voltage 1.25V ~ 35V ( with automatic buck, scope of work, any voltage inputs can be arbitrarily regulated voltage output ) ; Built- 4A efficient MOSFET switches enable efficiency up to 94%; (LM2577 current is 3A) high switching frequency of 400KHz, the ripple is smaller and smaller . (LM2577 frequency only 50KHz) Specifications: Material: Metal, Etc. Color: As Shown Technical parameters: Model Specificationï ¼Å¡DSN6000AUD Automatic Buck module Module Propertiesï ¼Å¡Non- isolated boost (BOOST) Rectificationï ¼Å¡Non- Synchronous Rectification Input Rangeï ¼Å¡3.8V ~ 32V Output Rangeï ¼Å¡1.25V ~ 35V Input Currentï ¼Å¡3A ( max ) , no-load 18mA (5V input , 8V output , no-load is less than 18mA. Higher the voltage , the greater the load current . ) Conversion efficiencyï ¼Å¡