DC-DC Step-Down Converter with XL4016 with Current Regulation - EXXL4016

Step-down converter with XL4016 with current regulation is used to step down DC voltages. The operating input voltage is 7V to 32V , and the output 1V to 28V. It is built on the basis of an integrated circuit XL4016, working as a step-down (buck converter) with a built-in power transistor. The circuit works with very few external components and is therefore preferred for building such types of converter boards. The integrated circuit provides an efficiency reaching up to 95% in optimal cases. Quiescent consumption is also low when no load is connected – up to 10mA. The built-in power transistor allows powering the circuit up to about 4A, and with additional cooling via airflow – up to 8A. The output voltage is adjusted with a multi-turn precision trimmer potentiometer. The current implementation of the IC XL4016 also allows setting the output current – also via a trimmer. It connects via input (IN) and output (OUT) terminals:

• Input terminal IN – input voltage is connected, observing polarity
• Output terminal OUT – load is connected, observing polarity

Advantages of DC-DC step-down converter with XL4016

• Small board size allows easy integration into devices

• Easy adjustment of output voltage – with a precision potentiometer

• Easy adjustment of output current – with a precision potentiometer

• High performance – with a fan mounted, up to 8A output current is achieved

Applications of DC-DC step-down converter with XL4016

• Automotive applications

• Industrial applications

• Applications in battery-powered supplies

• Use as a driver for LED lighting

• Providing multiple output voltages from a single input in small-sized devices