BQ29312A_TI 二、三、四节锂离子或锂聚合物电池保护 AFE

BQ29312A的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：电池管理 IC - 电池监测器和平衡器
功能描述：二、三、四节锂离子或锂聚合物电池保护 AFE
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BQ29312A的产品详情：

The bq29312A 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 bq29312A also integrates an I²C compat- ible interface to extract battery parameters such as cell voltages and control output status. Other par- ameters such as current protection thresholds and delays can be programmed into the bq29312A to increase the flexibility of the battery management system.

The bq29312A provides safety protection for over- charge, overload, short-circuit, overvoltage, and undervoltage conditions with the battery management host. In overload and short-circuit conditions, the bq29312A 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 bq29312A. 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 ).

BQ29312A的优势和特性：

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 Overload 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
bq29312A is 100% specification compatible with the bq29312
APPLICATIONS
- Notebook PCs
- Medical and Test Equipment
- Portable Instrumentation

BQ29312A的参数（英文）：

Number of series cells (Min)
2
Vin (Max) (V)
25
Features
Cell balancing, High-side driver, I2C support, Multi-cell support, Overcurrent in charging protection, Overcurrent in discharging protection, Separate MCU requirement, Short-current detection
Number of series cells (Max)
4
Rating
Catalog

BQ29312A具体的完整产品型号参数及价格（美元）：

BQ29312A的完整型号有：BQ29312APW、BQ29312APWR、BQ29312ARTHR，以下是这些产品的关键参数及官网采购报价：

BQ29312APW，工作温度：-40 to 85，封装：TSSOP (PW)-24，包装数量MPQ：60个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网BQ29312APW的批量USD价格：2.509（1000+）

BQ29312APWR，工作温度：-40 to 85，封装：TSSOP (PW)-24，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网BQ29312APWR的批量USD价格：2.15（1000+）

BQ29312ARTHR，工作温度：-40 to 85，封装：VQFN (RTH)-24，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAUAG，TI官网BQ29312ARTHR的批量USD价格：2.198（1000+）

BQ29312A的评估套件：

BQ29312A的电路图解：

BQ29312A的评估套件：