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BQ25872

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I2C 1cell 7A battery switch charger with ADC and external OVP controller

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Data sheet

BQ25872

ACTIVE
Data sheet Order now

Product details

Number of series cells 1 Charge current (max) (A) 7 Vin (max) (V) 6 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.975 Absolute max Vin (max) (V) 40 Control topology Flash Charger Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated ADC Vin (min) (V) 2.8 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 7 Vin (max) (V) 6 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.975 Absolute max Vin (max) (V) 40 Control topology Flash Charger Control interface I2C Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated ADC Vin (min) (V) 2.8 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFF) 42 6.72 mm² 2.8 x 2.4
  • Adapter Input Voltage Range: 3 V to 14 V
    • Allow up to 14-V Adaptor Voltage
  • Highly Integrated 7-A Battery Switch
    • Integrated MOSFETs and Current Sensing
    • Low RDS(on) (13-mΩ) MOSFETs for High Current Operation
  • Integrated High Accuracy ADC for System Monitor
    • VBUS, VBAT, VOUT, VDROP Voltage
    • Input and Battery Current
    • Battery and VBUS Connector Temperature
  • Linear Regulation (LDO) Mode Operation
    • Four Linear Regulation Loops: IBUS, IBAT, VBAT and VOUT
    • Programmable Linear Regulation Thresholds
  • Programmable Safety Protections
    • VBUS, VOUT, and VBAT Over Voltage Protections (OVP)
    • IBUS and IBAT Over Current Protection (OCP)
    • IBUS Reverse Current Protection (RCP)
    • VDROP (VBUS-VOUT) OVP
    • VBUS Connector and Battery Thermal Protection
    • Thermal Shutdown
  • Interrupt Status Output For Host Processor Alert
  • Up To 1-MHz I2C Read and Write Speed
  • Low Battery Leakage Current in Battery Only Mode
  • WCSP Package for Small Footprint
  • Adapter Input Voltage Range: 3 V to 14 V
    • Allow up to 14-V Adaptor Voltage
  • Highly Integrated 7-A Battery Switch
    • Integrated MOSFETs and Current Sensing
    • Low RDS(on) (13-mΩ) MOSFETs for High Current Operation
  • Integrated High Accuracy ADC for System Monitor
    • VBUS, VBAT, VOUT, VDROP Voltage
    • Input and Battery Current
    • Battery and VBUS Connector Temperature
  • Linear Regulation (LDO) Mode Operation
    • Four Linear Regulation Loops: IBUS, IBAT, VBAT and VOUT
    • Programmable Linear Regulation Thresholds
  • Programmable Safety Protections
    • VBUS, VOUT, and VBAT Over Voltage Protections (OVP)
    • IBUS and IBAT Over Current Protection (OCP)
    • IBUS Reverse Current Protection (RCP)
    • VDROP (VBUS-VOUT) OVP
    • VBUS Connector and Battery Thermal Protection
    • Thermal Shutdown
  • Interrupt Status Output For Host Processor Alert
  • Up To 1-MHz I2C Read and Write Speed
  • Low Battery Leakage Current in Battery Only Mode
  • WCSP Package for Small Footprint

The device is a 7-A battery switch charger with an integrated 10-bit ADC. The high-current battery switch charger is a 13-mΩ MOSFET with reverse current blocking designed for high efficiency and minimal voltage drop. The high-charge current capability of the device makes it ideal for smartphones, tablets, and other portable devices with large battery capacity.

The integrated 10-bit ADC can measure input voltage and current, battery voltage and current, as well as battery temperature and input connector temperature. This allows the user application to continuously monitor the power input and battery charging parameters to ensure the safety of the battery charging. The flexible OVP and OCP thresholds for VBUS, VOUT, and battery can be modified via I2C registers as the battery goes through constant current (CC) and constant voltage (CV) mode.

The I2C serial interface of the device can operate at speeds up to 1 MHz and allows access to the ADC’s measurements of the different charging parameters and also allows for flexible software control of the device. The INT pin provides instantaneous feedback to the host in case of a fault condition. I2C status registers allow the host to read the current status of all faults and events.

The device is a 7-A battery switch charger with an integrated 10-bit ADC. The high-current battery switch charger is a 13-mΩ MOSFET with reverse current blocking designed for high efficiency and minimal voltage drop. The high-charge current capability of the device makes it ideal for smartphones, tablets, and other portable devices with large battery capacity.

The integrated 10-bit ADC can measure input voltage and current, battery voltage and current, as well as battery temperature and input connector temperature. This allows the user application to continuously monitor the power input and battery charging parameters to ensure the safety of the battery charging. The flexible OVP and OCP thresholds for VBUS, VOUT, and battery can be modified via I2C registers as the battery goes through constant current (CC) and constant voltage (CV) mode.

The I2C serial interface of the device can operate at speeds up to 1 MHz and allows access to the ADC’s measurements of the different charging parameters and also allows for flexible software control of the device. The INT pin provides instantaneous feedback to the host in case of a fault condition. I2C status registers allow the host to read the current status of all faults and events.
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Technical documentation

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* Data sheet bq25872 14-V, 7-A, Battery Switch Charger with Integrated 10-bit ADC datasheet PDF | HTML 01 Sep 2016
Application note 具有高效率电荷泵（Charge Pump Charger）充电系统介绍 06 Aug 2018
Application note Flash Battery Charging Pushes the Boundary of Charging Current 15 Mar 2017
EVM User's guide bq25871 and bq25872 PWR813 Evaluation Module User Guide 27 Sep 2016

Design & development

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

Evaluation board

BQ25872EVM-813 — BQ25872 Complete Charger Evaluation Module

The bq25872 evaluation module (EVM) is a complete charger module for evaluating the highly-integrated battery switch in WCSP package for 1 cell Li-Ion and Li-polymer battery in a wide range of smartphone and tablet applications.

User guide: PDF
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DSBGA (YFF) 42 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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