MP2760

The MP2760 is a buck-boost charger for battery packs with 1 to 4 cells in series. It accepts a wide 4V to 22V input voltage (V_IN) range to charge the battery. The battery voltage can be above or below V_IN due to the buck-boost topology.

When the input is present, the MP2760 operates in charge mode. The device measures the battery voltage and charges the battery with four phases: constant current trickle charge, constant current pre-charge, constant current fast charge, and constant voltage charge. Additional features include charge termination and automatic recharge. The MP2760 integrates the input current (I_IN) limit and V_IN limit to avoid overloading the input power source. This is compliant with USB PD specifications.

The MP2760 provides narrow-voltage DC (NVDC) power path management. A battery FET (BATFET) controls an external N-channel MOSFET to regulate the system’s minimum voltage and provide a battery supplement function. The device can also supply a wide 3V to 21V voltage range at the IN pin when source mode is enabled. The MP2760 also has an output current (I_OUT) limit up to 6A in source mode. These are compliant with USB PD specifications.

The charge and discharge parameters (e.g. I_IN limit, V_IN limit, charging current, battery full regulation voltage, output voltage (V_OUT), and I_OUT in source mode) can be configured via the I²C/SMBus interface. The MP2760 can also provide statuses and fault information through the I²C/SMBus registers.

To guarantee safe operation, the IC limits the die temperature to a configurable threshold. Other safety features include input over-voltage protection (OVP), battery OVP, system OVP, thermal shutdown, and a configurable timer to prevent prolonged charging of a dead battery.

The MP2760 is available in a TQFN-30 (4mmx5mm) package.