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BQ77PL900

正在供货

5 至 10 节锂离子电池保护和 AFE

产品详情

Number of series cells (min) 5 Number of series cells (max) 10 Features Cell balancing, FET drive, I2C support, Integrated ADC, LDO output, Multi-cell support, Overvoltage protection, Separate MCU requirement, Temperature sensing, Undervoltage protection Operating current (typ) (µA) 450 Rating Catalog Vin (max) (V) 50 Operating temperature range (°C) -40 to 100 Battery overvoltage protection (min) (V) 4.15 Battery overvoltage protection (max) (V) 4.5
Number of series cells (min) 5 Number of series cells (max) 10 Features Cell balancing, FET drive, I2C support, Integrated ADC, LDO output, Multi-cell support, Overvoltage protection, Separate MCU requirement, Temperature sensing, Undervoltage protection Operating current (typ) (µA) 450 Rating Catalog Vin (max) (V) 50 Operating temperature range (°C) -40 to 100 Battery overvoltage protection (min) (V) 4.15 Battery overvoltage protection (max) (V) 4.5
SSOP (DL) 48 164.358 mm² 15.88 x 10.35
  • 5, 6, 7, 8, 9, or 10 Series-Cell Primary Protection
  • PMOS FET Drive for Charge and Discharge FETs
  • Capable of Operation with 1-m Sense Resistor
  • Supply Voltage Range from 7 V to 50 V
  • Low Supply Current of 450 µA Typical
  • Integrated 5 V 25-mA LDO
  • Integrated 3.3 V 25-mA LDO
  • Stand-Alone Mode
    • Pack Protection Control and Recovery
    • Individual Cell Monitoring
    • Integrated Cell Balancing
    • Programmable Threshold and Delay Time for OvervoltageUndervoltage Overcurrent in Discharge Short Circuit in Discharge
    • Fixed Overtemperature Protection
  • Host Control Mode
    • I2C Interface to Host Controller
    • Analog Interface for Host Cell Measurement and System Charge/Discharge Current
    • Host-Controlled Protection Recovery
    • Host-Controlled Cell Balancing
  • APPLICATIONS
    • Cordless Power Tools
    • Power Assisted Bicycle/Scooter
    • Uninterruptible Power Supply (UPS) Systems
    • Medical Equipment
    • Portable Test Equipment

  • 5, 6, 7, 8, 9, or 10 Series-Cell Primary Protection
  • PMOS FET Drive for Charge and Discharge FETs
  • Capable of Operation with 1-m Sense Resistor
  • Supply Voltage Range from 7 V to 50 V
  • Low Supply Current of 450 µA Typical
  • Integrated 5 V 25-mA LDO
  • Integrated 3.3 V 25-mA LDO
  • Stand-Alone Mode
    • Pack Protection Control and Recovery
    • Individual Cell Monitoring
    • Integrated Cell Balancing
    • Programmable Threshold and Delay Time for OvervoltageUndervoltage Overcurrent in Discharge Short Circuit in Discharge
    • Fixed Overtemperature Protection
  • Host Control Mode
    • I2C Interface to Host Controller
    • Analog Interface for Host Cell Measurement and System Charge/Discharge Current
    • Host-Controlled Protection Recovery
    • Host-Controlled Cell Balancing
  • APPLICATIONS
    • Cordless Power Tools
    • Power Assisted Bicycle/Scooter
    • Uninterruptible Power Supply (UPS) Systems
    • Medical Equipment
    • Portable Test Equipment

The bq77PL900 is a five to ten series cell lithium-ion battery pack protector. The integrated I2C communications interface allows the bq77PL900 also to be as an analog front end (AFE) for a Host controller. Two LDOs, one 5 V/25 mA and one 3.3 V/25 mA, are also included and may be used to power a host controller or support circuitry.

The bq77PL900 integrates a voltage translation system to extract battery parameters such as individual cell voltages and charge/discharge current. Variables such as voltage protection thresholds and detection delay times can be programmed by using the internal EEPROM.

The bq77PL900 can act as a stand-alone self-contained battery protection system (stand-alone mode). It can alternatively be combined with a host microcontroller to offer fuel gauge or other battery management capabilities to the host system (host-control mode).

The bq77PL900 provides full safety protection for overvoltage, undervoltage, overcurrent in discharge, and short circuit in discharge conditions. When the EEPROM programmable safety thresholds are reached, the bq77PL900 turns off the FET drive autonomously. No external components are needed to configure the protection features.

The analog front end (AFE) outputs allow a host controller to observe individual cell voltages and charge/discharge currents. The host controller's analog-to-digital converter connects to the bq77PL900 to acquire these values.

Cell balancing can be performed autonomously, or the host controller can activate it individually via a cell bypass path integrated into the bq77PL900. Internal control registers accessible via the I2C interface configure this operation. The maximum balancing bypass current is set via an external series resistor and the internal FET-on resistance (typically 400 ). Optionally, external bypass cell balance FETs can be used for increased current capability.

The bq77PL900 is a five to ten series cell lithium-ion battery pack protector. The integrated I2C communications interface allows the bq77PL900 also to be as an analog front end (AFE) for a Host controller. Two LDOs, one 5 V/25 mA and one 3.3 V/25 mA, are also included and may be used to power a host controller or support circuitry.

The bq77PL900 integrates a voltage translation system to extract battery parameters such as individual cell voltages and charge/discharge current. Variables such as voltage protection thresholds and detection delay times can be programmed by using the internal EEPROM.

The bq77PL900 can act as a stand-alone self-contained battery protection system (stand-alone mode). It can alternatively be combined with a host microcontroller to offer fuel gauge or other battery management capabilities to the host system (host-control mode).

The bq77PL900 provides full safety protection for overvoltage, undervoltage, overcurrent in discharge, and short circuit in discharge conditions. When the EEPROM programmable safety thresholds are reached, the bq77PL900 turns off the FET drive autonomously. No external components are needed to configure the protection features.

The analog front end (AFE) outputs allow a host controller to observe individual cell voltages and charge/discharge currents. The host controller's analog-to-digital converter connects to the bq77PL900 to acquire these values.

Cell balancing can be performed autonomously, or the host controller can activate it individually via a cell bypass path integrated into the bq77PL900. Internal control registers accessible via the I2C interface configure this operation. The maximum balancing bypass current is set via an external series resistor and the internal FET-on resistance (typically 400 ). Optionally, external bypass cell balance FETs can be used for increased current capability.

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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 5-10 cell Li-ion Battery protection & AFE 数据表 (Rev. B) 2008年 12月 3日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
EVM 用户指南 bq77PL900EVM-001 (Rev. B) 2018年 3月 6日
模拟设计期刊 Cell balancing buys extra run time and battery life 2009年 3月 11日
应用手册 Cell Balancing with the bq77PL900 2008年 7月 3日

设计和开发

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支持软件

SLUC103 bq77PL900 EVSW Install v1p0p0

支持的产品和硬件

支持的产品和硬件

产品
电池保护器
BQ77PL900 5 至 10 节锂离子电池保护和 AFE
封装 引脚 下载
SSOP (DL) 48 查看选项

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

支持和培训

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