ZHCS384H November   2011  – July 2022 BQ24160 , BQ24160A , BQ24161 , BQ24161B , BQ24163 , BQ24168

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 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  Charge Mode Operation
        1. 8.3.1.1 Charge Profile
        2. 8.3.1.2 PWM Controller in Charge Mode
      2. 8.3.2  Battery Charging Process
      3. 8.3.3  Battery Detection
      4. 8.3.4  Dynamic Power Path Management (DPPM)
      5. 8.3.5  Input Source Connected
      6. 8.3.6  Battery Only Connected
      7. 8.3.7  Battery Discharge FET (BGATE)
      8. 8.3.8  DEFAULT Mode
      9. 8.3.9  Safety Timer and Watchdog Timer (BQ24160/BQ24161/BQ24161B/BQ24163 only)
      10. 8.3.10 D+, D– Based Adapter Detection for the USB Input (D+, D–, BQ24160/0A/3)
      11. 8.3.11 USB Input Current Limit Selector Input (PSEL, BQ24161/161B/168 only)
      12. 8.3.12 Hardware Chip Disable Input (CD)
      13. 8.3.13 LDO Output (DRV)
      14. 8.3.14 External NTC Monitoring (TS)
      15. 8.3.15 Thermal Regulation and Protection
      16. 8.3.16 Input Voltage Protection in Charge Mode
        1. 8.3.16.1 Sleep Mode
        2. 8.3.16.2 Input Voltage Based DPM
        3. 8.3.16.3 Bad Source Detection
        4. 8.3.16.4 Input Overvoltage Protection
        5. 8.3.16.5 Reverse Boost (Boost Back) Prevention Circuit
      17. 8.3.17 Charge Status Outputs (STAT, INT)
      18. 8.3.18 Good Battery Monitor
    4. 8.4 Device Functional Modes
    5. 8.5 Programming
      1. 8.5.1 Serial Interface Description
        1. 8.5.1.1 F/S Mode Protocol
    6. 8.6 Register Maps
      1. 8.6.1 Status/Control Register (READ/WRITE)
      2. 8.6.2 Battery/ Supply Status Register (READ/WRITE)
      3. 8.6.3 Control Register (READ/WRITE)
      4. 8.6.4 Control/Battery Voltage Register (READ/WRITE)
      5. 8.6.5 Vender/Part/Revision Register (READ only)
      6. 8.6.6 Battery Termination/Fast Charge Current Register (READ/WRITE)
      7. 8.6.7 VIN-DPM Voltage/ DPPM Status Register
      8. 8.6.8 Safety Timer/ NTC Monitor Register (READ/WRITE)
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Output Inductor and Capacitor Selection Guidelines
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Requirements for SYS Output
    2. 10.2 Requirements for Charging
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 第三方产品免责声明
    2. 12.2 接收文档更新通知
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 术语表
      1.      Mechanical, Packaging, and Orderable Information

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8.6.8 Safety Timer/ NTC Monitor Register (READ/WRITE)


Memory location: 07, Reset state: 1001 1xxx

BITNAMEREAD/WRITEFUNCTION
B7 (MSB)2XTMR_ENRead/Write1 – Timer slowed by 2x when in thermal regulation, input current limit, VIN_DPM or DPPM
0 – Timer not slowed at any time (default 0) (BQ24160/1 only)
B6TMR_1Read/WriteSafety Timer Time Limit –
00 – 27 minute fast charge
01 – 6 hour fast charge
10 – 9 hour fast charge
11 – Disable safety timers (default 00) (BQ24160/1 only)
B5TMR_2Read/Write
B4NARead/WriteNA
B3TS_ENRead/Write0 – TS function disabled
1 – TS function enabled (default 1)
B2TS_FAULT1Read onlyTS Fault Mode:
00 – Normal, No TS fault
01 – TS temp < TCOLD or TS temp > THOT (Charging suspended)
10 – TCOOL > TS temp > TCOLD (Charge current reduced by half, BQ24160 only)
11 – TWARM < TS temp < THOT (Charge voltage reduced by 140 mV, BQ24160 only)
B1TS_FAULT0Read only
B0 (LSB)LOW_CHGRead/ Write0 – Charge current as programmed in Register 0x05
1 – Charge current is half programmed value in Register 0x05
(default 0)
2xTMR_EN Bit (2x Timer Enable)
The 2xTMR_EN bit is used to slow down the timer when charge current is reduced by the system load. When 2xTMR_EN is a 1, the safety timer is slowed to half speed effectively doubling the timer time. The conditions that activate the 2x timer are: Input Current Limit, VINDPM, Thermal Regulation, LOW_CHG, BATSHRT and TS Cool. When 2xTMR_EN is a 0, the timer operates at normal speed in all conditions.
LOW_CHG Bit (Low Charge Mode Enable)
The LOW_CHG bit is used to reduce the charge current from the programmed value. This feature is used by systems where battery NTC is monitored by the host and requires a reduced charge current setting or by systems that need a “preconditioning” current for low battery voltages. Write a 1 to this bit to charge at half of the programmed charge current (BQ24160/1/3/8). Write a 0 to this bit to charge at the programmed charge current.