Top

Product details

Parameters

Number of series cells 1 Charge current (Max) (A) 2 Operating Vin (Max) (V) 10.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 3.5 Battery charge voltage (Max) (V) 4.44 Absolute Vin (safety rating) (Max) ((V)) 22 Control topology Switch-Mode Buck Control interface I2C Features Integrated LDO, BAT temp thermistor monitoring (JEITA profile), Power Path, BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation Operating Vin (Min) (V) 4.35 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

DSBGA (YFF) 30 6 mm² 2.427 x 2.027 VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other Battery charger ICs

Features

  • High-Efficiency Switched-Mode Charger With
    Separate Power Path
  • Startup System From Deeply Discharged or
    Missing Battery
  • USB Charging Compliant
    • Selectable Input Current Limit of 100 mA,
      500 mA, 900 mA, 1.5 A, and 2 A
  • BC1.2 Compatible D+, D– Detection
  • In Host Mode (After I2C Communication Starts
    and Before Watchdog Timer Times Out)
    • Programmable Battery Charge Voltage,
      VBATREG
    • Programmable Charge Current (ICHG)
    • Programmable Input Current Limit (ILIM)
    • Programmable Input Voltage-Based Dynamic
      Power Management Threshold, (VIN_DPM)
    • Programmable Input Overvoltage Protection
      Threshold (VOVP)
    • Programmable Safety Timer
  • Resistor Programmable Defaults for:
    • ICHG up to 2 A With Current Monitoring Output
      (ISET)
    • ILIM up to 2 A With Current Monitoring Output
      (ILIM)
    • VIN_DPM (VDPM)
  • Watchdog Timer Disable Bit
  • Integrated 4.9 V, 50 mA LDO
  • Complete System-Level Protection
    • Input UVLO, Input Overvoltage Protection
      (OVP), Battery OVP, Sleep Mode, VIN_DPM
    • Input Current Limit
    • Charge Current Limit
    • Thermal Regulation
    • Thermal Shutdown
    • Voltage-Based, JEITA Compatible NTC
      Monitoring Input
    • Safety Timer
  • 22 V Absolute Maximum Input Voltage Rating
  • 10.5 V Maximum Operating Input Voltage
  • Low RDS(on) Integrated Power FETs for a Charging
    Rate of up to 2 A
  • Open-Drain Status Outputs
  • Synchronous Fixed-Frequency PWM Controller
    Operating at 3 MHz for Small Inductor Support
  • AnyBoot Robust Battery Detection Algorithm
  • Charge Time Optimizer for Improved Charge
    Times at Any Given Charge Current
  • 2.40-mm × 2.00-mm 30-Ball DSBGA and 4-mm ×
    4-mm 24-Pin QFN Packages
open-in-new Find other Battery charger ICs

Description

The bq24250, bq24251, and bq24253 are highly integrated single-cell Li-Ion battery chargers and system power-path management devices targeted for space-limited, portable applications with high-capacity batteries. The single-cell charger has a single input that operates from either a USB port or an AC wall adapter for a versatile solution.

The power-path management feature allows the bq24250, bq24251, and bq24253 to power the system from a high-efficiency DC-DC converter while simultaneously and independently charging the battery. The charger monitors the battery current at all times and reduces the charge current when the system load requires current above the input current limit. This reduced charge current allows for proper charge termination and enables the system to run with a defective or absent battery pack. Additionally, this reduced charge current enables instant system turnon even with a totally discharged battery or no battery. The architecture of the power-path management also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents. This supplementation of current requirements enables the use of a smaller adapter.

The battery is charged in four phases: trickle charge, precharge, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. Additionally, a voltage-based, JEITA compatible battery pack thermistor monitoring input (TS) that monitors battery temperature for safe charging is included.

open-in-new Find other Battery charger ICs
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
Description

The Fuel Tank MKII BoosterPack™ plug-in module is the next generation design of the original Fuel Tank BoosterPack module.  This BoosterPack includes next-generation TI battery monitoring ICs and other new features to make it easier to use. The Fuel Tank MKII BoosterPack module (...)

Features
  • 3.7V 1200mAh lithium polymer battery
  • On- board BQ24250 lithium polymer charger
  • On- board BQ27441 gas gauge
  • Works with TI LaunchPad™ Development Kits
  • USB charging with indicator LED
  • Battery status outputs: battery temperature, voltage, average current, charge state, and remaining capacity
EVALUATION BOARDS Download
document-generic User guide
$149.00
Description

This EVM enables test and evaluation of the Texas Instruments' bq24250/51/57 devices. The bq2425x series are highly integrated single cell Li-Ion battery chargers targeted for space-limited, portable applications with high capacity batteries. The single cell charger has a single input that operates (...)

Features
  • High-efficiency switch-mode charger
  • Synchronous fixed-frequency PWM controller operating at 3MHz for small inductor support
  • USB charging compliant
  • Integrated 50mA LDO
  • Integrated power FETs for up to 2.0A charging rate
  • Complete system level protection
  • BC1.2 D+/D- detection with dead battery provision (DBP (...)

Software development

DRIVERS & LIBRARIES Download
Linux Driver for BQ2425x
BQ24257SW-LINUX The Linux driver supports the BQ2425x Switch-Mode Li-Ion Battery 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:

  • bq24257
  • (...)
SUPPORT SOFTWARE Download
SLUC435A.ZIP (528 KB)

Design tools & simulation

CALCULATION TOOLS Download
SLUC436.ZIP (22 KB)

Reference designs

REFERENCE DESIGNS Download
DLP Ultra-mobile NIR Spectrometer for Portable Chemical Analysis with Bluetooth Connectivity
TIDA-00554 The ultra-mobile near-infrared (NIR) spectrometer reference design utilizes Texas Instruments' DLP technology in conjunction with a single-element InGaAs detector to deliver high performance measurements in a portable form factor that is more affordable than architectures using an expensive InGaAs (...)
document-generic Schematic document-generic User guide
Design files
REFERENCE DESIGNS Download
Charger Booster Pack Reference Design
TIDA-00587 The TIDA-00587 reference design is a charger that has been designed as a booster pack to fit on the TI Launchpad development boards. The use of this this board for development will reduce the time spent in design and test of the bq24250 charger IC. You can charger your battery and using the on board (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
2A Single input I2C/standalone switch mode li-ion battery charger reference design
TIDA-00048 This reference design contains highly integrated single cell Li-Ion battery chargers targeted for space-limited, portable applications with high capacity batteries. The solution includes a single cell charger with a single input that operates from either a USB port or AC wall adapter for a versatile (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
DSBGA (YFF) 30 View options
VQFN (RGE) 24 View options

Ordering & quality

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. ​​​​​​​​​​​​​​