Product details


Number of series cells 1, 2, 3, 4 Charge current (Max) (A) 8.128 Operating Vin (Max) (V) 24 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH, SuperCap Battery charge voltage (Min) (V) 1.024 Battery charge voltage (Max) (V) 19.2 Absolute Vin (safety rating) (Max) ((V)) 30 Control topology Switch-Mode Buck-boost Control interface SMBus Features IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, Solar input/MPPT, USB C/PD compatible, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power) Operating Vin (Min) (V) 3.5 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

WQFN (RSN) 32 16 mm² 4 x 4 open-in-new Find other Battery charger ICs


  • Pin-to-pin and software compatible to BQ25700A
  • Charge 1s to 4s battery from wide range of input source
    • 3.5-V to 24-V Input operating voltage
    • Supports USB2.0, USB 3.0, USB 3.1 (Type C), and USB Power Delivery (USB-PD) input current settings
    • Seamless transition among buck, buck-boost and boost operations
    • Input current and voltage regulation (IDPM and VDPM) against source overload
  • Power/current monitor for CPU throttling
    • Comprehensive PROCHOT profile, IMVP8/IMVP9 compliant
    • Input and battery current monitor
    • System power monitor, IMVP8/IMVP9 compliant
  • Narrow voltage DC (NVDC) power path management
    • Instant-on with no battery or depleted battery
    • Battery supplements system when adapter is fully-loaded
    • Battery MOSFET ideal diode operation in supplement mode
  • Power up USB port from battery (USB OTG)
    • 3-V to 20.8-V VOTG With 8-mV resolution
    • Output current limit up to 6.4 A with 50-mA resolution
  • TI patented Pass Through Mode (PTM) for system power efficiency improvement and battery fast charging
  • When system is powered by battery only, Vmin Active Protection (VAP) mode supplements battery from input capacitors during system peak power spike
  • Input Current Optimizer (ICO) to extract max input power
  • 800-kHz or 1.2-MHz Programmable switching frequency for 2.2-µH or 1.0-µH inductor
  • Host control interface for flexible system configuration
    • SMBus Port optimal system performance and status reporting
    • Hardware pin to set input current limit without EC control
  • Integrated ADC to monitor voltage, current and power
  • High accuracy for the regulation and monitor
    • ±0.5% Charge voltage regulation
    • ±2% Input/charge current regulation
    • ±2% Input/charge current monitor
    • ±4% Power monitor
  • Safety
    • Thermal shutdown
    • Input, system, battery overvoltage protection
    • Input, MOSFET, inductor overcurrent protection
  • Low battery quiescent current
  • Package: 32-Pin 4 × 4 WQFN
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This device is a synchronous NVDC buck-boost battery charge controller, offering a low component count, high efficiency solution for space constrained, 1s-4s battery charging applications.

The NVDC configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing.

BQ25710 charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.

During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration without host control.

In the absence of an input source, BQ25710 supports USB On-the-Go (OTG) function from 1- to 4-cell battery to generate adjustable 3 V to 20.8 V on VBUS with 8 mV resolution. The OTG output voltage transition slew rate can be configurable, which is complied with the USB PD 3.0 PPS specifications.

When only battery powers the system and no external load is connected to the USB OTG port,BQ25710 supports the Vmin Active Protection (VAP) feature, in which the device charges up the VBUS voltage from the battery to store some energy in the input decoupling capacitors. During the system peak power spike, the huge current drawing from the battery creates a larger voltage drop across the impedance from the battery to the system. The energy stored in the input capacitors will supplement the system, to prevent the system voltage from dropping below the minimum system voltage and causing the system crash. This Vmin Active Protection (VAP) is designed to absorb system power peaks during periods of SOC high power demand, which is highly recommended by Intel for the platforms with 1S~2S battery.

BQ25710 monitors adapter current, battery current and system power. The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.

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Technical documentation

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Type Title Date
* Data sheet BQ25710 SMBus Narrow VDC Buck-Boost Battery Charge Controller datasheet (Rev. A) Feb. 05, 2021
Technical article When to use rechargeable batteries in small battery applications Oct. 01, 2019
User guide bq2571x Evaluation Module User's Guide (Rev. B) Oct. 09, 2018
Technical article Should I use a linear charger or a switching charger? Oct. 31, 2015
Technical article 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

document-generic User guide
The BQ25710 evaluation module (EVM) is an SMBus controlled NVDC (narrow voltage DC) buck boost charge controller with N-CH MOSFET Selector and Current Monitoring. The input voltage range, for the buck converter, is between 3.5V and 24 V, with a programmable output of 1–4 cells and a charge (...)
  • Host-controlled NVDC 1S-4S Battery buck boost Charger with 3.5V~24V input; 1V~19.2V charging output and 3V~20.8V OTG output
  • Ultra Low Quiescent Current of 600 μA and High PFM Light Load Efficiency >80% at 200 mW Load and PTM operation to Meet Energy Star and ErP Lot6
  • High Integration charger has (...)

Software development

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 (...)
  • 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 

CAD/CAE symbols

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QFN (RSN) 32 View options

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