MP2650GV

The MP2650 is a highly integrated buck or boost charger IC with narrow-voltage DC (NVDC) power path management and USB On-The-Go (OTG). It is designed for battery packs with 2 cells to 4 cells in series. All power MOSFETs are integrated to provide a compact system solution size. The IC can accept a wide input voltage (VIN) range for charging, with a 21V maximum VIN. The MP2650 has two operating modes during the charging process: boost charging mode and buck charging mode, depending on VIN and the cell count. With the I2C interface, the MP2650 can be flexibly configured to set the parameters in boost charging mode, buck charging mode, and OTG mode. The parameters include the input current limit (IIN_LIM), VIN limit (VIN_LIM), charge current (ICHARGE), battery charge voltage regulation (VBATT_REG), and safety charge timer. The I2C can also provide the IC’s operation status via the fault and status 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. NVDC power path management regulates the system voltage (VSYS) within a narrow DC range to provide an optimized bus voltage (VBUS) for the rails at the system bus. This allows the system to operate even when the battery is completely depleted or removed. The MP2650 is available in a QFN-30 (4mmx5mm) package.