ZHCSDZ9 July   2015

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 说明（续）
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics: Supply Current
    6. 7.6  Electrical Characteristics: Power Supply Control
    7. 7.7  Electrical Characteristics: AFE Power-On Reset
    8. 7.8  Electrical Characteristics: AFE Watchdog Reset and Wake Timer
    9. 7.9  Electrical Characteristics: Current Wake Comparator
    10. 7.10 Electrical Characteristics: VC1, VC2, VC3, VC4, BAT, PACK
    11. 7.11 Electrical Characteristics: SMBD, SMBC
    12. 7.12 Electrical Characteristics: PRES, BTP_INT, DISP
    13. 7.13 Electrical Characteristics: LEDCNTLA, LEDCNTLB, LEDCNTLC
    14. 7.14 Electrical Characteristics: Coulomb Counter
    15. 7.15 Electrical Characteristics: CC Digital Filter
    16. 7.16 Electrical Characteristics: ADC
    17. 7.17 Electrical Characteristics: ADC Digital Filter
    18. 7.18 Electrical Characteristics: CHG, DSG FET Drive
    19. 7.19 Electrical Characteristics: PCHG FET Drive
    20. 7.20 Electrical Characteristics: FUSE Drive
    21. 7.21 Electrical Characteristics: Internal Temperature Sensor
    22. 7.22 Electrical Characteristics: TS1, TS2, TS3, TS4
    23. 7.23 Electrical Characteristics: PTC, PTCEN
    24. 7.24 Electrical Characteristics: Internal 1.8-V LDO
    25. 7.25 Electrical Characteristics: High-Frequency Oscillator
    26. 7.26 Electrical Characteristics: Low-Frequency Oscillator
    27. 7.27 Electrical Characteristics: Voltage Reference 1
    28. 7.28 Electrical Characteristics: Voltage Reference 2
    29. 7.29 Electrical Characteristics: Instruction Flash
    30. 7.30 Electrical Characteristics: Data Flash
    31. 7.31 Electrical Characteristics: OCD, SCC, SCD1, SCD2 Current Protection Thresholds
    32. 7.32 Timing Requirements: OCD, SCC, SCD1, SCD2 Current Protection Timing
    33. 7.33 Timing Requirements: SMBus
    34. 7.34 Timing Requirements: SMBus XL
    35. 7.35 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Primary (1st Level) Safety Features
      2. 8.3.2  Secondary (2nd Level) Safety Features
      3. 8.3.3  Charge Control Features
      4. 8.3.4  Gas Gauging
      5. 8.3.5  Configuration
        1. 8.3.5.1 Oscillator Function
        2. 8.3.5.2 System Present Operation
        3. 8.3.5.3 Emergency Shutdown
        4. 8.3.5.4 1-Series, 2-Series, 3-Series, or 4-Series Cell Configuration
        5. 8.3.5.5 Cell Balancing
      6. 8.3.6  Battery Parameter Measurements
        1. 8.3.6.1 Charge and Discharge Counting
      7. 8.3.7  Battery Trip Point (BTP)
      8. 8.3.8  Lifetime Data Logging Features
      9. 8.3.9  Authentication
      10. 8.3.10 LED Display
      11. 8.3.11 Voltage
      12. 8.3.12 Current
      13. 8.3.13 Temperature
      14. 8.3.14 Communications
        1. 8.3.14.1 SMBus On and Off State
        2. 8.3.14.2 SBS Commands
    4. 8.4 Device Functional Modes
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 High-Current Path
          1. 9.2.2.1.1 Protection FETs
          2. 9.2.2.1.2 Chemical Fuse
          3. 9.2.2.1.3 Lithium-Ion Cell Connections
          4. 9.2.2.1.4 Sense Resistor
          5. 9.2.2.1.5 ESD Mitigation
        2. 9.2.2.2 Gas Gauge Circuit
          1. 9.2.2.2.1 Coulomb-Counting Interface
          2. 9.2.2.2.2 Power Supply Decoupling and PBI
          3. 9.2.2.2.3 System Present
          4. 9.2.2.2.4 SMBus Communication
          5. 9.2.2.2.5 FUSE Circuitry
        3. 9.2.2.3 Secondary-Current Protection
          1. 9.2.2.3.1 Cell and Battery Inputs
          2. 9.2.2.3.2 External Cell Balancing
          3. 9.2.2.3.3 PACK and FET Control
          4. 9.2.2.3.4 Temperature Output
          5. 9.2.2.3.5 LEDs
          6. 9.2.2.3.6 Safety PTC Thermistor
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Protector FET Bypass and Pack Terminal Bypass Capacitors
      2. 11.1.2 ESD Spark Gap
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 文档支持
      1. 12.1.1 相关文档
    2. 12.2 社区资源
    3. 12.3 商标
    4. 12.4 静电放电警告
    5. 12.5 Glossary
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

1 特性

  • 全集成 1 节、2 节、3 节和 4 节串联锂离子或锂聚合物电池组管理器及保护
  • 下一代已获专利的 Impedance Track™ 技术可准确测量锂离子和锂聚合物电池中的可用电量
  • 高侧 N 通道保护场效应晶体管 (FET) 驱动
  • 充电或者静止状态时集成的电池均衡
  • 可编程保护特性的完全阵列
    • 电压
    • 电流
    • 温度
    • 充电终止时间
    • CHG/DSG FET
    • 模拟前端 (AFE)
  • 精密的充电算法
    • 日本电子与信息技术工业协会 (JEITA)
    • 增强型充电
    • 自适应充电
    • 电池均衡
  • 支持 TURBO 升压模式
  • 支持电池跳变点 (BTP)
  • 诊断寿命数据监视器和黑匣子记录器
  • 发光二极管 (LED) 显示
  • 支持 2 线制系统管理总线 (SMBus) v1.1 接口
  • 安全散列算法 (SHA-1) 认证
  • 紧凑封装：32 导线四方扁平无引线 (QFN) (RSM)

2 应用

  • 笔记本/上网本
  • 医疗与测试设备
  • 便携式仪表

3 说明

bq40z50-R1 器件采用已获专利的 Impedance Track™ 技术，是一款基于电池组的单芯片全集成解决方案，针对 1 节、2 节、3 节和 4 节串联锂离子或锂聚合物电池组提供电量监测、保护及认证等一些列丰富的功能。

bq40z50-R1 器件利用其集成的高性能模拟外设，测量锂离子或锂聚合物电池的可用容量、电压、电流、温度和其他关键参数，保留准确的数据记录，并通过 SMBus v1.1 兼容接口将这些信息报告给系统主机控制器。

器件信息(1)

器件型号 封装 封装尺寸（标称值）
bq40z50-R1 VQFN (32) 4.00mm x 4.00mm
  1. 如需了解所有可用封装，请见数据表末尾的可订购产品附录。

简化电路原理图

bq40z50-R1 Simp_Schematic.gif