Top

Product details

Parameters

Number of series cells 1 Charge current (Max) (A) 2.5 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), IC thermal regulation, 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 2.5-A Switch Mode Charger
    • 92% Charge Efficiency at 2 A
  • Highest Battery Discharge Efficiency with 12-mΩ
    Battery Discharge MOSFET up to 9-A Discharge Current
  • Single Input USB-compliant/Adapter Charger
    • 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
open-in-new Find other Battery charger ICs

Description

The bq24196 is 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. The bq24196 takes the result from detection circuit in the system, such as USB PHY device. The bq24196 is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation. Meanwhile, the bq24196 meets USB On-the-Go operation power rating specification by supplying 5 V on VBUS with 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 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 device provides various safety features for battery charging and system operation, including 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 bq24196 indicates if a good power source is present. The INT immediately notifies the host when a fault occurs.

The bq24196 is available in a 24-pin, 4.00 × 4.00 mm2 thin VQFN 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 7
Type Title Date
* Datasheet bq24196 I2C Controlled 2.5-A Single Cell USB/Adapter Charger with Narrow VDC Power Path Management and USB OTG datasheet (Rev. A) Dec. 30, 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 Should I use a linear charger or a switching charger? Oct. 30, 2015
User guide bq24190 Calculation Tool Aug. 19, 2015
Technical articles Summertime and the livin' is easy Jun. 20, 2014
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
  • (...)

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.

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

Related videos