The MP2762A is a highly integrated buck or boost charger IC with narrow voltage DC (NVDC) power path management and USB On-the-Go (OTG) for battery packs with two cells in series. All power MOSFETs are integrated to provide a compact system solution size.
The IC can accept a wide range of input voltages for charging, with a maximum of 21V. The device has two operating modes during the charging process: boost charging mode when the input voltage is below 5.75V, and buck charging mode when the input voltage exceeds 8.5V.
With the I2C interface, the MP2762A can be flexibly configured to set the parameters in both charging mode and OTG mode. Parameters include the input current limit, input voltage limit, charging current, battery-full voltage, and safety charge timer. It can also provide the operation status through status and fault registers.
To guarantee safe operation, the IC limits the die temperature to a preset value of 120°C. Other safety features include input over-voltage protection (OVP), battery OVP, system OVP, thermal shutdown, battery temperature protection, and a configured timer to prevent prolonged charging of a dead battery.
To comply with IMVP8 specifications, the IC provides three analog output pins for system power (PSYS), input current (IAM), and battery current (IBM). It also has a processor hot indication pin (PROCHOT) for system power control.
The NVDC power path management regulates the system voltage within a narrow DC range to provide an optimized system bus voltage for the rails at the system bus. With this feature, the system can continue operating even when the battery is completely depleted or removed.
The MP2762A is available in a QFN-30 (4mmx5mm) package.
Fully integrated NVDC power path with up to 6A charge current for a 2-cell battery
Support for dual-phase operation to allow using 1.0mm height inductors
I2C programmable for all charging parameters
Compact BOM size with all power FETs integrated
Input current and battery current monitor via IAM/IBM pin
Integrated 10-bit ADC
Up to 5V/3A USB OTG
Compact QFN-30 (4mmx5mm) solution size
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