As a SoC specifically designed for power banks, the three in one chip can achieve the overall function of a single battery cell mobile power supply on a single chip, supporting up to 4 port charge and discharge management, button and battery indicator, automatic standby and wake-up functions. No need for additional MCU, single chip implementation of the entire system, simple and efficient, making it the best choice for low-cost solutions; The two in one charging chip can be paired with an MCU to achieve the overall function of a single battery cell mobile power supply, which supports up to 4 ports for charging and discharging management, buttons and battery indicator, automatic standby and wake-up functions. By adding an MCU, it allows for flexible configuration of multiple functions such as charging voltage, button function, battery indicator, NTC protection, etc., creating a differentiated mobile power supply solution.