BQ25882 Texas instruments

BQ25882

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BQ25882

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Описание

The BQ25882 is a highly-integrated 2-A switch-mode battery charge management and system power path management device for dual-cell Li-Ion and Li-polymer batteries. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.

High-efficiency 2-A, 1.5-MHz switch mode boost charger
- 92.5% Charge efficiency at 7.6-V battery, 1-A charge
- Optimized for USB input and 2-cell Li-Ion output
- Selectable low power PFM mode for light load operation with out-of-audio option
USB On-the-Go (OTG) with adjustable output from 4.5 V to 5.5 V
- Buck converter with up-to 2-A output
- 94.5% Efficiency at 5-V, 1-A output
- Accurate constant current (CC) limit
- Output short protection
- Selectable low power PFM mode for light load operation with out-of-audio option
Single Input to support USB input adapters
- Supports 3.9-V to 6.2-V input voltage range with 20-V absolute maximum input voltage rating
- Input current limit (500 mA to 3.3 A with 100-mA resolution) to support USB2.0, USB3.0 standard adapters
- Maximum power tracking by input voltage limit up-to 5.5 V
- Auto-detect USB SDP, CDP, DCP, and non-standard adapters
Input current optimizer (ICO) to maximize input power without overloading adapters
Highest battery discharge efficiency with 15-mΩ battery discharge MOSFET
Integrated ADC for system monitoring (BUS voltage and current, BAT voltage, charge current, SYS voltage, and NTC and die temperature)
Narrow VDC (NVDC) power path management
- Instant-on works with no battery or deeply discharged battery
- Ideal diode operation in battery supplement mode
Flexible autonomous and I²C mode for optimal system performance
High integration includes all MOSFETs, current sensing and loop compensation
High accuracy
- ±0.4% Charge voltage regulation
- ±7.5% Charge current regulation
- ±7.5% Input current regulation
Safety
- Battery temperature sensing in charge and OTG buck mode
- Thermal regulation and thermal shutdown

Number of series cells	2
Charge current (max) (A)	2
Vin (max) (V)	6.2
Cell chemistry	Li-Ion/Li-Polymer
Battery charge voltage (min) (V)	6.8
Battery charge voltage (max) (V)	9.2
Absolute max Vin (max) (V)	20
Control topology	Switch-Mode Boost
Control interface	I2C
Features	BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Integrated LDO, Power Path, USB C/PD compatible, USB D+/D-/BC1.2 integrated, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power)
Vin (min) (V)	3.9
Rating	Catalog
Operating temperature range (°C)	-40 to 85