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電池管理 IC
電池充電器 IC

BQ25872

現行

具 ADC 和外部 OVP 控制器的 I2C 1 芯 7A 電池開關充電器

立即訂購
產品規格表

BQ25872

現行
產品規格表 立即訂購

產品詳細資料

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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類型 標題 日期
* Data sheet bq25872 14-V, 7-A, Battery Switch Charger with Integrated 10-bit ADC datasheet PDF | HTML 2016年 9月 1日
Application note 具有高效率电荷泵（Charge Pump Charger）充电系统介绍 2018年 8月 6日
Application note Flash Battery Charging Pushes the Boundary of Charging Current 2017年 3月 15日
EVM User's guide bq25871 and bq25872 PWR813 Evaluation Module User Guide 2016年 9月 27日

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開發板

BQ25872EVM-813 — BQ25872 完整充電器評估模組

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.

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