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电池监测器和平衡器

BQ29312

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二、三、四节锂离子或锂聚合物电池保护 AFE

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BQ29312

正在供货
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产品详情

Number of series cells (min) 2 Vin (max) (V) 25 Features Cell balancing, High-side driver, I2C support, LDO output, Multi-cell support, Overcurrent in charging protection, Overcurrent in discharging protection, Separate MCU requirement, Short-current detection Device type Memory device Number of series cells (max) 4 Operating temperature range (°C) -25 to 85 Rating Catalog Communication interface No Communication Operating current (typ) (µA) 60
Number of series cells (min) 2 Vin (max) (V) 25 Features Cell balancing, High-side driver, I2C support, LDO output, Multi-cell support, Overcurrent in charging protection, Overcurrent in discharging protection, Separate MCU requirement, Short-current detection Device type Memory device Number of series cells (max) 4 Operating temperature range (°C) -25 to 85 Rating Catalog Communication interface No Communication Operating current (typ) (µA) 60
TSSOP (PW) 24 49.92 mm² 7.8 x 6.4
  • 2-, 3-, or 4-Cell Series Protection Control
  • Can Directly Interface With the bq2084 Gas Gauges
  • Provides Individual Cell Voltages and Battery Voltage to Battery Management Host
  • Integrated Cell Balancing Drive
  • I2C Compatible User Interface Allows Access to Battery Information
  • Programmable Threshold and Delay for Over Load and Short Circuit During Charge and Discharge
  • System Alert Interrupt Output
  • Host Control Can Initiate Sleep Power Mode and Ship Mode
  • Integrated 3.3-V, 25-mA LDO
  • Supply Voltage Range From 4.5 V to 25 V
  • Low Supply Current of 60-µA Typical
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation
  • 2-, 3-, or 4-Cell Series Protection Control
  • Can Directly Interface With the bq2084 Gas Gauges
  • Provides Individual Cell Voltages and Battery Voltage to Battery Management Host
  • Integrated Cell Balancing Drive
  • I2C Compatible User Interface Allows Access to Battery Information
  • Programmable Threshold and Delay for Over Load and Short Circuit During Charge and Discharge
  • System Alert Interrupt Output
  • Host Control Can Initiate Sleep Power Mode and Ship Mode
  • Integrated 3.3-V, 25-mA LDO
  • Supply Voltage Range From 4.5 V to 25 V
  • Low Supply Current of 60-µA Typical
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

The bq29312 is a 2-, 3-, or 4-cell lithium-ion battery pack protection analog front end (AFE) IC that incorporates a 3.3-V, 25-mA low-dropout regulator (LDO). The bq29312 also integrates an I2C compatible interface to extract battery parameters such as cell voltages and control output status. Other parameters such as current protection thresholds and delays can be programmed into the bq29312 to increase the flexibility of the battery management system.

The bq29312 provides safety protection for overcharge, overload, short-circuit, overvoltage, and undervoltage conditions in conjunction with the battery management host. In overload and short-circuit conditions, the bq29312 turns the FET drive off autonomously dependant on the internal configuration setting.

The communications interface allows the host to observe and control the current status of the bq29312. It enables cell balancing, enters different power modes, sets overload levels, sets the overload blanking delay time, sets short-circuit threshold levels for charge and discharge, and sets the short-circuit blanking delay time.

Cell balancing of each cell is performed via a cell bypass path, which is enabled via the internal control register accessible via the I2C compatible interface. The maximum bypass current is set via an external series resistor and internal FET on resistance (typical 400 ).

The bq29312 is a 2-, 3-, or 4-cell lithium-ion battery pack protection analog front end (AFE) IC that incorporates a 3.3-V, 25-mA low-dropout regulator (LDO). The bq29312 also integrates an I2C compatible interface to extract battery parameters such as cell voltages and control output status. Other parameters such as current protection thresholds and delays can be programmed into the bq29312 to increase the flexibility of the battery management system.

The bq29312 provides safety protection for overcharge, overload, short-circuit, overvoltage, and undervoltage conditions in conjunction with the battery management host. In overload and short-circuit conditions, the bq29312 turns the FET drive off autonomously dependant on the internal configuration setting.

The communications interface allows the host to observe and control the current status of the bq29312. It enables cell balancing, enters different power modes, sets overload levels, sets the overload blanking delay time, sets short-circuit threshold levels for charge and discharge, and sets the short-circuit blanking delay time.

Cell balancing of each cell is performed via a cell bypass path, which is enabled via the internal control register accessible via the I2C compatible interface. The maximum bypass current is set via an external series resistor and internal FET on resistance (typical 400 ).
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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 Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE 数据表 (Rev. E) 2005年 3月 2日
应用手册 Comparing the bq29312A to the bq29312 2005年 3月 7日
应用手册 bq2083 and bq2085 Board Offset Characterization and Compensation 2004年 1月 30日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

支持软件

EV2300-084 — bq2084 Evaluation Software

The Evaluation Software (EVSW) is a Windows application that works in conjunction with the bq2084 Evaluation Module (EVM). Also required, is the EV2300 USB interface board. This program provides a comprensive set of tools to allow easy evaluation of the bq2084 advanced gas gauge.

支持的产品和硬件

支持的产品和硬件

产品
电池监测器和平衡器
BQ29312 — 二、三、四节锂离子或锂聚合物电池保护 AFE
电池电量监测
BQ2084-V143 — 符合 SBS v1.1 标准的电量监测计，可与 BQ29312A 一起使用 BQ2084-V150 — 符合 SBS v1.1 标准的电量监测计，具有 LED 延迟时间
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封装 引脚 下载
TSSOP (PW) 24 查看选项
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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

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