Single-cell Li-Ion controller with USB and overvoltage clamp
It integrates a USB-compatible interface and built-in overvoltage fault protection, making it a compact charge-management solution for portable equipment that draws power from a USB port or a wall adapter.
The USB interface means this controller can negotiate charge current directly from a USB host or charger without an external protocol translator, simplifying the BOM for handheld devices. The overvoltage protection clamps the input rail when a faulty adapter supplies too high a voltage, saving the battery and downstream circuitry — a practical safeguard for field equipment that gets plugged into unknown supplies. The single-cell support locks the part into designs using one Li-Ion or Li-Polymer cell in series; two-cell stacks need a different controller.