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Product details

Parameters

Number of series cells 1 Charge current (Max) (A) 4.5 Operating Vin (Max) (V) 17 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 3.5 Battery charge voltage (Max) (V) 4.4 Absolute Vin (safety rating) (Max) ((V)) 22 Control topology Switch-Mode Buck Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IINDPM (Input current limit), Input OVP, Power Path, USB OTG integrated Operating Vin (Min) (V) 3.9 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

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

Features

  • High Efficiency 4.5-A Switch Mode Charger
    • 92% Charge Efficiency at 2 A, 90% at 4 A
    • Accelerate Charge Time by Battery Path Impedance
      Compensation
  • Compatible with MaxLife Technology for Faster
    Charging When Used in Conjunction With bq27531
  • Highest Battery Discharge Efficiency with 12-mΩ
    Battery Discharge MOSFET up to 9-A Discharge Current
  • Single Input USB-compliant/Adapter Charger
    • USB Host or Charging Port D+/D- Detection
      Compatible to USB Battery Charger Spec 1.2
    • Input Voltage and Current Limit Supports USB2.0
      and USB3.0
    • Input Current Limit: 100 mA, 150 mA, 500 mA, 900 mA,
      1.2 A, 1.5 A, 2 A and 3 A
  • 3.9-V to 17-V Input Operating Voltage Range
    • Support All Kinds of Adapter with Input
      Voltage DPM Regulation
  • USB OTG 5 V at 1.3-A Synchronous Boost Converter
    Operation
    • 93% 5-V Boost Efficiency at 1 A
  • Narrow VDC (NVDC) Power Path Management
    • Instant-on Works with No Battery or Deeply
      Discharged Battery
    • Ideal Diode Operation in Battery Supplement Mode
  • 1.5-MHz Switching Frequency for Low Profile Inductor
  • Autonomous Battery Charging with or without Host
    Management
    • Battery Charge Enable
    • Battery Charge Preconditioning
    • Charge Termination and Recharge
  • High Accuracy (0°C to 125°C)
    • ±0.5% Charge Voltage Regulation
    • ±7% Charge Current Regulation
    • ±7.5% Input Current Regulation
    • ±2% Output Regulation in Boost Mode
  • High Integration
    • Power Path Management
    • Synchronous Switching MOSFETs
    • Integrated Current Sensing
    • Bootstrap Diode
    • Internal Loop Compensation
  • Safety
    • Battery Temperature Sensing and Charging
      Safety Timer
    • Thermal Regulation and Thermal Shutdown
    • Input System Over-Voltage Protection
    • MOSFET Over-Current Protection
  • Charge Status Outputs for LED or Host
    Processor
  • Low Battery Leakage Current and Support Shipping
    Mode
  • 4.00 mm × 4.00 mm VQFN-24 Package
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Description

The bq24190, bq24192, and bq24192I are highly-integrated switch-mode battery charge management and system power path management devices for single cell Li-Ion and Li-polymer battery in a wide range of tablet and other portable devices.

Its 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 device supports a wide range of input sources, including standard USB host port, USB charging port and high power DC adapter. To set the default input current limit, the bq24190 detects the input source following the USB battery charging spec 1.2, and the bq24192 and bq24192I take the results from detection circuit in the system, such as USB PHY device. The bq24190,192, and 192I are compliant with USB 2.0 and USB 3.0 power specifications with input current and voltage regulation. Meanwhile, the bq24190, bq24192, and bq24192I meet USB On-the-Go operation power rating specification by supplying 5 V on the VBUS with a current limit up to 1.3 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 devices initiate and complete 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 bq24190, bq24192, and bq24192I provide various safety features for battery charging and system operation, including dual pack negative thermistor monitoring, charging safety timer and over-voltage/over-current 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 in the bq24192 and bq24192I indicates if a good power source is present. The INT immediately notifies the host when a fault occurs.

The bq24190, bq24192, and bq24192I are available in a 24-pin, 4.00 × 4.00 mm2 thin VQFN package.

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Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet bq2419x I2C Controlled 4.5-A Single Cell USB/Adapter Charger with Narrow VDC Power Path Management and USB OTG datasheet (Rev. B) Dec. 29, 2014
Technical articles When to use rechargeable batteries in small battery applications Oct. 01, 2019
Technical articles Higher charger input-voltage ratings: better safe than sorry Jul. 20, 2016
Technical articles How to run an Impedance Track gas gauge learning cycle Mar. 02, 2016
Technical articles Should I use a linear charger or a switching charger? Oct. 30, 2015
User guide bq24190 Calculation Tool Aug. 19, 2015
Application note Dynamic power management for faster, more efficient battery charging Oct. 28, 2013
User guide bq24190/2/2i/3/6 and bq24292i EVM (PWR021) (Rev. C) Aug. 28, 2013

Design & development

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

Hardware development

EVALUATION BOARD Download
Description

The bq2419x evaluation module (EVM) is a complete charger module for evaluating an I2C-controlled single NVDC-1 charge using the bq2419x devices.

The BQ2419xEVM-021 requires USB Interface Adaptive Evaluation Module “USB-TO-GPIO” for I2C interface. If one is not already available to you (...)

Features
  • High Efficiency 4.5A Switch Mode Charger
  • Highest Battery Discharge Efficiency at 2A, 90% at 4A
  • Single Input USB-Compliant/Adapter Charger
  • 3.9V-17V Input Operating Voltage Range
  • USB OTG 5V at 1.3A Synchronous Boost
  • Narrow VDC Power Path Management
  • 1.5MHz Switching Frequency for Low Profile Inductor
  • (...)
EVALUATION BOARD Download
99
Description

Battery Management Unit Impedance Track™ Fuel (Gas) Gauge and bq24192 4.5-A, Switch-Mode Battery Charger for Single-Cell Applications

The bq27531 evaluation module (EVM) has a bq27531-G1 gas gauge that directly communicates with bq24192 single-cell, Li-Ion battery charger via I2C. This complete (...)
Features
  • IN input operating range of 4.2 V – 10 V
  • USB input operating range of 4.2 V – 6 V
  • LED indication for status signals
  • Test points for key signals available for testing purposes.

Software development

DRIVER OR LIBRARY Download
Linux Driver for BQ24190
BQ24190SW-LINUX The Linux driver supports the BQ24190 I2C Controlled 4.5A Single Cell 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:

  • bq24190

 

(...)

GUI FOR EVALUATION MODULE (EVM) Download
SLUC391A.ZIP (474 KB)

CAD/CAE symbols

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

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

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