BQ25887 I2C Controlled, 2-cell, 2-A boost-mode battery charger with cell balancing | TI.com

BQ25887 (ACTIVE) I2C Controlled, 2-cell, 2-A boost-mode battery charger with cell balancing

 

Description

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, no OTG, and no power path.

Features

  • High-efficiency 2-A, 1.5MHz switch mode boost charger
    • 93.4% Charge efficiency at 5V adapter, 7.6-V battery, 1-A charge
    • Optimized for USB input and 2-cell Li-Ion battery
    • Selectable low power PFM mode for light load operation
  • Single input to support USB input adapters
    • Supports 3.9 V – 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
  • Cell balancing and I2C control
    • Integrated FETs for balancing current up to 400 mA
    • Automatic cell balancing with default register setting
  • Input current optimizer (ICO) to maximize input power without overloading adapters
  • Integrated 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 compensation
  • High accuracy
    • ±0.5% Charge voltage regulation
    • ±5% Charge current regulation
    • ±7.5% Input current regulation
  • Safety
    • Battery temperature sensing in charge
    • Thermal regulation and thermal shutdown

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Parametrics

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Part number Order Number of series cells Function Cell chemistry Charge current (Max) (A) Operating Vin (Min) (V) Operating Vin (Max) (V) Absolute Vin (safety rating) (Max) ((V)) Battery charge voltage (Min) (V) Battery charge voltage (Max) (V) Features Control interface Control topology Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
BQ25887 Order now 2     Charger     Li-Ion/Li-Polymer     2.2     3.9     6.2     20     6.8     9.2     ICO
IINDPM
Integrated ADC
Integrated FET
JEITA BAT Temp Monitoring (Thermistor Pin)
OVP
Thermal Regulation
UVLO
VINDPM
Cell Balancing    
I2C     Switch-Mode Boost     Catalog     -40 to 85     VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ25882 Order now 2     Charger     Li-Ion/Li-Polymer     2.2     3.9     6.2     20     6.8     9.2     ICO
IINDPM
Integrated ADC
Integrated FET
Integrated LDO
JEITA BAT Temp Monitoring (Thermistor Pin)
OVP
Power Path
Thermal Regulation
USB OTG
USB C/PD
USB D+/D-/BC1.2
UVLO
VINDPM    
I2C     Switch-Mode Boost     Catalog     -40 to 85     DSBGA | 25     25DSBGA: 5 mm2: 2.2 x 2.2 (DSBGA | 25)    
BQ25883 Order now 2     Charger     Li-Ion/Li-Polymer     2.2     3.9     6.2     20     6.8     9.2     ICO
IINDPM
Integrated ADC
Integrated FET
Integrated LDO
JEITA BAT Temp Monitoring (Thermistor Pin)
OVP
Power Path
Thermal Regulation
USB OTG
USB C/PD
USB D+/D-/BC1.2
UVLO
VINDPM    
I2C     Switch-Mode Boost     Catalog     -40 to 85     VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ25886 Order now 2     Charger     Li-Ion/Li-Polymer     2.2     3.9     6.2     20     8.2     8.8     ICO
IINDPM
Integrated FET
JEITA BAT Temp Monitoring (Thermistor Pin)
OVP
Power Path
Thermal Regulation
USB OTG
USB D+/D-/BC1.2
UVLO
VINDPM    
Standalone
Standalone (RC-Settable)    
Switch-Mode Boost     Catalog     -40 to 85     VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)