The MEZS7-1SDAPowerBank is a complete power bank solution module using the MP2632, which includes a buck charger with BC1.2 detection, integrated boost with two separate outputs, and a 4-LED indicator for battery state of charge.
The solution module uses a form-fitting board and supports two operating modes — charge mode and boost mode — to allow system and battery power management based on the state of the input.
When a 5V USB input power is present, the board charges a single-cell battery with a max charge current of 3A. In the absence of an input source, the solution module switches to boost mode through the PB pin to power the SYS output from the battery with a max current of up to 3A for two USB ports. The distribution of current between the two USB ports is dependent on the load at each port.
The solution module provides four LED drivers to achieve the voltage-based fuel gauge indication and distinguish charge mode from boost mode. To guarantee safe operation, the solution module offers input over-voltage protection, battery over-voltage protection, thermal shutdown, battery temperature monitoring, and a timer to prevent prolonged charging of a dead battery.
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