Home Power management Battery management ICs Battery charger ICs

BQ25887

ACTIVE

I2C 2 cell 2A Boost battery charger for USB input and integrated cell balancing

Product details

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), Input OVP, Integrated ADC, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
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), Input OVP, Integrated ADC, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3.9 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGE) 24 16 mm² 4 x 4
  • High-efficiency 2-A, 1.5-MHz switch mode boost charger
    • 93.4% Charge efficiency at 5-V 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 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
  • 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
  • High-efficiency 2-A, 1.5-MHz switch mode boost charger
    • 93.4% Charge efficiency at 5-V 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 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
  • 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

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.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
BQ25882 ACTIVE I2C 2 cell 2A Boost battery charger for USB input in a WCSP package with Power Path This product is 2A, 2S I2C boost charger with Power Path in a WCSP package
BQ25883 ACTIVE I2C 2 cell 2A Boost battery charger for USB input in a WQFN package with Power Path This product is 2A, 2S I2C boost charger with Power Path

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 5
Type Title Date
* Data sheet BQ25887 I2C Controlled 2-Cell, 2-A Boost-Mode Battery Charger With Cell Balancing For USB Input datasheet (Rev. B) PDF | HTML 03 Nov 2019
Application note State of Charge Estimation Using Smart Battery Charger PDF | HTML 11 Oct 2021
Technical article 4 Reasons why you should use a boost charger for 2-cell battery application PDF | HTML 03 Apr 2019
Application note USB charging solution for 2-cell (2S) discrete using BQ25887 with cell-balancing 28 Mar 2019
User guide BQ25887 QFN boost-mode battery charger evaluation module 05 Feb 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

BQ25887EVM — Boosting battery chargers with cell balancing evaluation module

Charging 2-cell, 8.4-V battery from a legacy 5-V USB port requires a boost charger. The BQ25887 is a highly integrated 2-A boosting, 1.5-MHz switch-mode battery charge management with cell balancing for 2-s Li-ion and Li-polymer battery. The I2C serial interface with charging and cell balancing (...)
User guide: PDF
Not available on TI.com
Interface adapter

EV2400 — USB-Based PC Interface Board for Battery Fuel (Gas) Gauge Evaluation Module

The EV2400 EVM interface board enables an IBM-compatible or other type PC (with the required driver for its particular platform) to communicate with the Texas Instruments SMBus or I2C interface gas gauges via a Universal Serial Bus (USB) port. In addition to this board, PC software is required to (...)

User guide: PDF
Not available on TI.com
Package Pins Download
VQFN (RGE) 24 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos