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Product details

Parameters

Number of series cells 1 Charge current (Max) (A) 5 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, Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, USB C/PD compatible, USB D+/D-/BC1.2 integrated, USB OTG integrated Operating Vin (Min) (V) 3.9 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

WQFN (RTW) 24 16 mm² 4 x 4 open-in-new Find other Battery charger ICs

Features

  • High Efficiency 5-A, 1.5-MHz Switch Mode Buck Charge
    • 93% Charge Efficiency at 2 A and 91% Charge Efficiency at 3-A Charge Current
    • Optimize for High Voltage Input (9 V to 12 V)
    • Low Power PFM mode for Light-Load Operations
  • USB On-the-Go (OTG) with Adjustable Output from 4.5 V to 5.5 V
    • Selectable 500-kHz and 1.5-MHz Boost Converter with up-to 2.4-A Output
    • 93% Boost Efficiency at 5 V at 1-A Output
    • Accurate Hiccup Mode Overcurent Protection
  • 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
    • Maximum Power Tracking by Input Voltage Limit up-to 14 V for Wide Range of Adapters
    • Auto Detect USB SDP, CDP, DCP, and Non-Standard Adapters (bq25890)
  • Input Current Optimizer (ICO) to Maximize Input Power without Overloading Adapters
  • Resistance Compensation (IRCOMP) from Charger Output to Cell Terminal
  • Highest Battery Discharge Efficiency with 11-mΩ Battery Discharge MOSFET up to 9 A
  • Integrated ADC for System Monitor
    (Voltage, Temperature, Charge Current)
  • Narrow VDC (NVDC) Power Path Management
    • Instant-On Works with No Battery or Deeply Discharged Battery
    • Ideal Diode Operation in Battery Supplement Mode
  • BATFET Control to Support Ship Mode, Wake Up, and Full System Reset
  • Flexible Autonomous and I2C Mode for Optimal System Performance
  • High Integration includes all MOSFETs, Current Sensing and Loop Compensation
  • 12-µA Low Battery Leakage Current to Support Ship Mode
  • High Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±5% Charge Current Regulation
    • ±7.5% Input Current Regulation
  • Safety
    • Battery Temperature Sensing for Charge and Boost Mode
    • Thermal Regulation and Thermal Shutdown
  • Create a Custom Design Using the bq25890 With the WEBENCH® Power Designer and bq25892 With the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

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Description

The bq25890, bq25892 are highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast 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 bq25890/2 is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. 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. It also integrates Input Current Optimizer (ICO) and Resistance Compensation (IRCOMP) to deliver maximum charging power to battery. 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 battery FET (BATFET, Q4) between system and battery. 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 support fast charging using adjustable high voltage adapter, the bq25890 provides support for MaxChargeTM handshake using D+/D– pins and DSEL pin for USB switch control. In addition, both bq25890 and bq25892 include interface to support adjustable high voltage adapter using input current pulse protocol. To set the default input current limit, device uses the built-in USB interface (bq25890) or takes the result from detection circuit in the system (bq25892), 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. In addition, the Input Current Optimizer (ICO) supports the detection of maximum power point detection of the input source without overload. The device also meets USB On-the-Go (OTG) operation power rating specification by supplying 5 V (Adjustable 4.5 V to 5.5 V) on VBUS with current limit up to 2.4 A.

The power path management regulates the system slightly above battery voltage but does not drop below 3.5-V minimum system voltage (programmable). With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current to zero. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This Supplement Mode operation prevents overloading the input source.

The device initiates and completes a charging cycle without software control. It automatically detects the battery voltage and charges the battery in three phases: pre-conditioning, constant current and constant voltage. At the end of the charging cycle, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. When the full battery falls below the recharge threshold, the charger will automatically start another charging cycle.

The charger provides various safety features for battery charging and system operations, including battery temperature negative thermistor monitoring, 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 (bq25892) indicates if a good power source is present. The INT immediately notifies host when fault occurs.

The device also provides a 7-bit analog-to-digital converter (ADC) for monitoring charge current and input/battery/system (VBUS, BAT, SYS, TS) voltages. The QON pin provides BATFET enable/reset control to exit low power ship mode or full system reset function.

The device family is available in 24-pin, 4 x 4 mm2 x 0.75 mm thin WQFN package.

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Download

Technical documentation

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$99.00
Description

The bq25890 evaluation module (EVM) is a complete charger module for evaluating the highly-integrated switch-mode battery charge management and system power path management device for 1 cell Li-Ion and Li-polymer battery in a wide range of smartphone and tablet applications.

The BQ25890EVM-664 (...)

Features
  • Input voltage range: 3.9V to 14V;
  • I2C communication;
  • LED indication for status signals
  • Test points for key signals available for testing purposes;
  • Jumpers for different circuit configuration.
EVALUATION BOARDS Download
document-generic User guide
$149.00
Description
This evaluation module (EVM) is a complete evaluation system for the bq27z561 battery management system. The EVM includes bq27z561  and bq2980  circuit module and a link to Windows® based PC software. The circuit module includes bq27z561 and bq2980 integrated circuit (IC), and all (...)
Features
  • Easy to use impedance track gas gauge
  • Acurate cell current, temperature and voltage monitoring
  • Over voltage, under voltage, over current, over temperature and under temperature protection
  • 1-mOhm sense resistor
  • On board EV2400
  • On board dual programmable chargers

Software development

APPLICATION SOFTWARE & FRAMEWORKS 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 
DRIVERS & LIBRARIES Download
Linux Driver for BQ25890
BQ25890SW-LINUX The Linux driver supports the BQ25890 5A Fast Charger. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • bq25890

 

Linux Source Files

The (...)

Design tools & simulation

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

Reference designs

REFERENCE DESIGNS Download
Mobile Point of Sale (mPOS) Power Reference Design
TIDA-00818 — This mobile point of sale (mPOS) reference design features a 1S1P Li-Ion battery architecture to reduce system size and cost. Integrated load switches are used to reduce standby power consumption and maximize battery life to enable the single-cell architecture. A USB Type-C charging port is also (...)
document-generic Schematic document-generic User guide
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 document-generic User guide
REFERENCE DESIGNS Download
Switched-Cap Fast Charge Reference Design for USB Power Delivery Programmable Power Supply
TIDA-01582 — The goal of this reference design is to show the total system performance when using the switched-cap fast charge topology in a smart phone application. The system includes using a smart wall adapter that supports USB Power Delivery (PD) Programmable Power Supply (PPS) specifications to reduce (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Dual Battery Charger IC Reference Design (connected in Cascode Configuration)
TIDA-00590 Higher capacity 1S batteries in the latest smartphones and tablets need higher charge currents to charge faster.  With 12-V power sources, two 5-A battery charger ICs connected in cascode, parallel configuration can provide more than 5-A charging current.  In addition, the heat from the (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WQFN (RTW) 24 View options

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