BQ25887 Series
I2C 2 cell 2A Boost battery charger for USB input and integrated cell balancing
Manufacturer: Texas Instruments
Catalog
I2C 2 cell 2A Boost battery charger for USB input and integrated cell balancing
Key Features
• High-efficiency 2-A, 1.5-MHz switch mode boost charger93.4% Charge efficiency at 5-V adapter, 7.6-V battery, 1-A chargeOptimized for USB input and 2-cell Li-Ion batterySelectable low power PFM mode for light load operationSingle input to support USB input adaptersSupports 3.9-V to 6.2-V input voltage range with 20-V absolute maximum input voltage ratingInput current limit (500 mA to 3.3 A with 100-mA resolution) to support USB2.0, USB3.0 standard adaptersMaximum power tracking by input voltage limit up-to 5.5 VCell balancing and I2C controlIntegrated FETs for balancing current up to 400 mAAutomatic cell balancing with default register settingInput current optimizer (ICO) to maximize input power without overloading adaptersIntegrated 16-bit ADC for system monitoring (BUS voltage and current, each cell voltage, charge current, and NTC and die temperature)High integration includes all MOSFETs, current sensing and loop compensationHigh accuracy±0.5% Charge voltage regulation±5% Charge current regulation±7.5% Input current regulationSafetyBattery temperature sensing in chargeThermal regulation and thermal shutdownHigh-efficiency 2-A, 1.5-MHz switch mode boost charger93.4% Charge efficiency at 5-V adapter, 7.6-V battery, 1-A chargeOptimized for USB input and 2-cell Li-Ion batterySelectable low power PFM mode for light load operationSingle input to support USB input adaptersSupports 3.9-V to 6.2-V input voltage range with 20-V absolute maximum input voltage ratingInput current limit (500 mA to 3.3 A with 100-mA resolution) to support USB2.0, USB3.0 standard adaptersMaximum power tracking by input voltage limit up-to 5.5 VCell balancing and I2C controlIntegrated FETs for balancing current up to 400 mAAutomatic cell balancing with default register settingInput current optimizer (ICO) to maximize input power without overloading adaptersIntegrated 16-bit ADC for system monitoring (BUS voltage and current, each cell voltage, charge current, and NTC and die temperature)High integration includes all MOSFETs, current sensing and loop compensationHigh accuracy±0.5% Charge voltage regulation±5% Charge current regulation±7.5% Input current regulationSafetyBattery temperature sensing in chargeThermal regulation and thermal shutdown
Description
AI
The BQ25887 is a highly-integrated 2-A boost switch-mode battery charge management device for 2-cell (2s) Li-Ion and Li-polymer battery. The BQ25887 has I2C control with cell balancing for USB input.
The BQ25887 is a highly-integrated 2-A boost switch-mode battery charge management device for 2-cell (2s) Li-Ion and Li-polymer battery. The BQ25887 has I2C control with cell balancing for USB input.
