Boost mode - Boost mode, this is also very common, but also a DC-DC. When the entire circuit only uses a single power supply (such as 3.7V lithium battery) power supply, you can power the IC by reducing the output of 3.3V, 1.6V and other lower voltages, and sometimes higher voltages are required in the circuit, such as the screen of some mobile devices.
582n is a booster chip. The booster chip is used in many electronic circuits. In modern life, the booster chip is one of the indispensable devices.