Top

Product details

Parameters

Number of series cells 1 Charge current (Max) (A) 3 Operating Vin (Max) (V) 14 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 3.84 Battery charge voltage (Max) (V) 4.6 Absolute Vin (safety rating) (Max) ((V)) 22 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path Operating Vin (Min) (V) 3.9 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

DSBGA (YFF) 42 7 mm² 2.862 x 2.568 open-in-new Find other Battery charger ICs

Features

  • Operation as Slave Charger to Provide Fast Charging in Dual Charger Operation
  • Simple Configuration with Minimum BOM
  • High Efficiency 3-A, 1.5-MHz Switch Mode Buck Charge
    • 92% Charge Efficiency at 3 A and 94% Charge Efficiency at 2 A Charge Current
    • Optimize for High Voltage Input (9 V / 12 V)
    • Low Power PFM mode for Light Load Operations
  • Single Input to Support USB Input and Adjustable High Voltage Adapters
    • Support 3.9-V to 14-V Input Voltage Range
    • Input Current Limit (100 mA to 3.25 A with 50-mA resolution) to Support USB2.0, USB3.0 standard and High Voltage Adapters
    • Wide Input Dynamic Power Management (DPM) Range
  • Highest Battery Discharge Efficiency with 5-mΩ Battery MOSFET
  • Default Charge Disabled
  • Integrated ADC for System Monitor
    (Input, System and Battery Voltage, Temperature, Charge Current)
  • Flexible Autonomous and I2C Mode for Optimal System Performance
  • Remote Battery Sensing
  • 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
    • Thermal Regulation and Thermal Shutdown
    • Input UVLO/Overvoltage Protection
    • Battery OVP
    • Safety Timer

All trademarks are the property of their respective owners.

open-in-new Find other Battery charger ICs

Description

The bq25898C is a highly-integrated switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The device supports high input voltage for charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution. The bq25898C is available in a 2.8mm x 2.5mm 42-ball DSBGA package.

The bq25898C is a highly-integrated 3-A switch-mode battery charge management device for single cell Li-Ion and Li-polymer battery. As a tiny and cost-effective device, it can also be configured as slave charger to provide fast charging in dual charger applications.

It features fast charging with high input voltage support for a wide range of smartphone, tablet and portable devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The solution is highly integrated with input reverse-blocking FET (RBFET,Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and integrated charge current sensing. It also integrates the bootstrap diode for the high-side gate drive and battery monitor for simplified system design. The I2C serial interface with charging and system settings makes the device a truly flexible solution.

The device supports a wide range of input sources, including standard USB host port, USB charging port, and USB compliant adjustable high voltage adapter. To set the default input current limit, the device takes the result from detection circuit in the system, such as USB PHY device. The device is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation.

The default charge current is set to 0 mA (both fast charge and precharge disabled). Once charge is enabled, the device may initiate and complete a charging cycle with software control.

The charger provides various safety features for battery charging and system operations, charging safety timer and overvoltage/overcurrent protections. The thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable). The STAT output reports the charging status and any fault conditions. The PG output indicates if a good power source is present. The INT immediately notifies host when fault occurs.

The device is available in a 2.80 mm x 2.50 mm 42-ball DSBGA package.

open-in-new Find other Battery charger ICs
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet bq25898C I2C Controlled Single Cell 3-A Charger for High Input Voltage in Compact DSBGA Package datasheet (Rev. B) Mar. 20, 2017
Technical articles When to use rechargeable batteries in small battery applications Oct. 01, 2019
Technical articles Use a dedicated parallel charger for cost-effective fast charging Aug. 10, 2016
Technical articles Should I use a linear charger or a switching charger? Oct. 30, 2015
Technical articles Summertime and the livin' is easy Jun. 20, 2014

Design & development

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

Hardware development

EVALUATION BOARD Download
99
Description

The bq25898C evaluation module (EVM) is a complete charger module for evaluating the highly-integrated switch-mode battery charge management and system power path management device in WCSP package for 1 cell Li-Ion and Li-polymer battery in a wide range of smartphone and tablet applications.

Features
  • Input voltage range of 3.9V to 14V and charge current up to 4 A
  • I2C communication with input current limit initially set by D+/D- detection
  • LED indication for status signals
  • Test points for key signals available for testing purposes
  • Jumpers for different circuit configuration

Software development

APPLICATION SOFTWARE & FRAMEWORK Download
Battery Management Studio (bqStudio) Software
BQSTUDIO Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
Features
  • Real-time Gauge Dashboard for monitoring basic registers
  • Full register access and logging
  • Full data memory access and logging
  • Product configuration and monitoring tools
  • Import and export of product configurations
  • Calibration and test automation
  • Export of FS files for the target production environment 

Design tools & simulation

SIMULATION MODEL Download
SLURAX7A.ZIP (305 KB) - Power Model

Reference designs

REFERENCE DESIGNS Download
Cascade Dual Charger Reference Design for 1S Li-Ion Battery Powered End Equipment
PMP15011 — Smartphones and other handheld equipment with 3AHr+ 1S Li-Ion batteries require 3-A+ charger current for fast charging.  Parallel chargers allow for high charge currents, resulting in shorter charge times, while distributing the heat losses across the end equipment PCB, thereby preventing (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
DSBGA (YFF) 42 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

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