ZHCSI47A april   2018  – january 2021 BQ25121A

PRODUCTION DATA  

1.   1
2. 1 特性
3. 2 應(yīng)用
4. 3 說明
5. 4 Revision History
6. 5 Description (continued)
7. 6 Device Comparison Table
8. 7 Pin Configuration and Functions
9. 8 Specifications
   1. 8.1 Absolute Maximum Ratings
   2. 8.2 ESD Ratings
   3. 8.3 Recommended Operating Conditions
   4. 8.4 Thermal Information
   5. 8.5 Electrical Characteristics
   6. 8.6 Timing Requirements
   7. 8.7 Typical Characteristics
10. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
       1. 9.3.1  Ship Mode
          1. 9.3.1.1 Ship Mode Entry and Exit
       2. 9.3.2  High Impedance Mode
       3. 9.3.3  Active Battery Only Connected
       4. 9.3.4  Voltage Based Battery Monitor
       5. 9.3.5  Sleep Mode
       6. 9.3.6  Input Voltage Based Dynamic Power Management (VIN(DPM))
       7. 9.3.7  Input Overvoltage Protection and Undervoltage Status Indication
       8. 9.3.8  Battery Charging Process and Charge Profile
       9. 9.3.9  Dynamic Power Path Management Mode
       10. 9.3.10 Battery Supplement Mode
       11. 9.3.11 Default Mode
       12. 9.3.12 Termination and Pre-Charge Current Programming by External Components (IPRETERM)
       13. 9.3.13 Input Current Limit Programming by External Components (ILIM)
       14. 9.3.14 Charge Current Programming by External Components (ISET)
       15. 9.3.15 Safety Timer
       16. 9.3.16 External NTC Monitoring (TS)
       17. 9.3.17 Thermal Protection
       18. 9.3.18 Typical Application Power Dissipation
       19. 9.3.19 Status Indicators ( PG and INT)
       20. 9.3.20 Chip Disable ( CD)
       21. 9.3.21 Buck (PWM) Output
       22. 9.3.22 Load Switch / LDO Output and Control
       23. 9.3.23 Manual Reset Timer and Reset Output ( MR and RESET)
    4. 9.4 Device Functional Modes
    5. 9.5 Programming
       1. 9.5.1 Serial Interface Description
       2. 9.5.2 F/S Mode Protocol
    6. 9.6 Register Maps
       1. 9.6.1  Status and Ship Mode Control Register
       2. 9.6.2  Faults and Faults Mask Register
       3. 9.6.3  TS Control and Faults Masks Register
       4. 9.6.4  Fast Charge Control Register
       5. 9.6.5  Termination/Pre-Charge Register
       6. 9.6.6  Battery Voltage Control Register
       7. 9.6.7  SYS VOUT Control Register
       8. 9.6.8  Load Switch and LDO Control Register
       9. 9.6.9  Push-button Control Register
       10. 9.6.10 ILIM and Battery UVLO Control Register
       11. 9.6.11 Voltage Based Battery Monitor Register
       12. 9.6.12 VIN_DPM and Timers Register
11. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
       1. 10.2.1 Design Requirements
       2. 10.2.2 Detailed Design Procedure
          1. 10.2.2.1 Default Settings
          2. 10.2.2.2 Choose the Correct Inductance and Capacitance
          3. 10.2.2.3 Calculations
             1. 10.2.2.3.1 Program the Fast Charge Current (ISET)
             2. 10.2.2.3.2 Program the Input Current Limit (ILIM)
             3. 10.2.2.3.3 Program the Pre-charge/termination Threshold (IPRETERM)
             4. 10.2.2.3.4 TS Resistors (TS)
       3. 10.2.3 Application Performance Curves
          1. 10.2.3.1 Charger Curves
          2. 10.2.3.2 SYS Output Curves
          3. 10.2.3.3 Load Switch and LDO Curves
          4. 10.2.3.4 LS/LDO Output Curves
          5. 10.2.3.5 Timing Waveforms Curves
12. 11Power Supply Recommendations
13. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
14. 13Device and Documentation Support
    1. 13.1 Device Support
       1. 13.1.1 第三方產(chǎn)品免責聲明
    2. 13.2 接收文檔更新通知
    3. 13.3 Trademarks
    4. 13.4 支持資源
    5. 13.5 靜電放電警告
    6. 13.6 術(shù)語表
15. 14Mechanical, Packaging, and Orderable Information