The BL9359 is a DC-DC Converter manufactured by Belling. It is a SOT23-6 RoHS compliant component, which can provide a wide input voltage range of 4.5V to 40V and a wide output voltage range of 0.8V to 28V. It comes with an integrated boost circuit, allowing it to be used for powering high current applications, such as motors, LEDs, and other power-hungry circuits. It also offers a wide input and output current range and has integrated protection features such as overvoltage and overcurrent protection. The BL9359 is also an energy efficient component, allowing it to be used in a variety of applications in renewable energy systems.