ZHCSO21 may   2021 BQ25720

PRODUCTION DATA  

1.   1
2. 1 特性
3. 2 應用
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  Power-Up Sequence
       2. 9.3.2  Vmin Active Protection (VAP) with Battery only
       3. 9.3.3  Two-Level Battery Discharge Current Limit
       4. 9.3.4  Fast Role Swap Feature
       5. 9.3.5  CHRG_OK Indicator
       6. 9.3.6  Input and Charge Current Sensing
       7. 9.3.7  Input Voltage and Current Limit Setup
       8. 9.3.8  Battery Cell Configuration
       9. 9.3.9  Device HIZ State
       10. 9.3.10 USB On-The-Go (OTG)
       11. 9.3.11 Converter Operation
       12. 9.3.12 Inductance Detection Through IADPT Pin
       13. 9.3.13 Converter Compensation
       14. 9.3.14 Continuous Conduction Mode (CCM)
       15. 9.3.15 Pulse Frequency Modulation (PFM)
       16. 9.3.16 Switching Frequency and Dithering Feature
       17. 9.3.17 Current and Power Monitor
           1. 9.3.17.1 High-Accuracy Current Sense Amplifier (IADPT and IBAT)
           2. 9.3.17.2 High-Accuracy Power Sense Amplifier (PSYS)
       18. 9.3.18 Input Source Dynamic Power Management
       19. 9.3.19 Input Current Optimizer (ICO)
       20. 9.3.20 Two-Level Adapter Current Limit (Peak Power Mode)
       21. 9.3.21 Processor Hot Indication
           1. 9.3.21.1 PROCHOT During Low Power Mode
           2. 9.3.21.2 PROCHOT Status
       22. 9.3.22 Device Protection
           1. 9.3.22.1 Watchdog Timer
           2. 9.3.22.2 Input Overvoltage Protection (ACOV)
           3. 9.3.22.3 Input Overcurrent Protection (ACOC)
           4. 9.3.22.4 System Overvoltage Protection (SYSOVP)
           5. 9.3.22.5 Battery Overvoltage Protection (BATOVP)
           6. 9.3.22.6 Battery Discharge Overcurrent Protection (BATOC)
           7. 9.3.22.7 Battery Short Protection (BATSP)
           8. 9.3.22.8 System Undervoltage Lockout (VSYS_UVP) and Hiccup Mode
           9. 9.3.22.9 Thermal Shutdown (TSHUT)
    4. 9.4 Device Functional Modes
       1. 9.4.1 Forward Mode
          1. 9.4.1.1 System Voltage Regulation with Narrow VDC Architecture
          2. 9.4.1.2 Battery Charging
       2. 9.4.2 USB On-The-Go
       3. 9.4.3 Pass Through Mode (PTM)-Patented Technology
    5. 9.5 Programming
       1. 9.5.1 SMBus Interface
          1. 9.5.1.1 SMBus Write-Word and Read-Word Protocols
          2. 9.5.1.2 Timing Diagrams
    6. 9.6 Register Map
       1. 9.6.1  ChargeOption0 Register (SMBus address = 12h) [reset = E70Eh]
       2. 9.6.2  ChargeCurrent Register (SMBus address = 14h) [reset = 0000h]
          1. 9.6.2.1 Battery Pre-Charge Current Clamp
       3. 9.6.3  ChargeVoltage Register (SMBus address = 15h) [reset value based on CELL_BATPRESZ pin setting]
       4. 9.6.4  ChargerStatus Register (SMBus address = 20h) [reset = 0000h]
       5. 9.6.5  ProchotStatus Register (SMBus address = 21h) [reset = B800h]
       6. 9.6.6  IIN_DPM Register With 10-mΩ Sense Resistor (SMBus address = 22h) [reset = 4100h]
       7. 9.6.7  ADCVBUS/PSYS Register (SMBus address = 23h)
       8. 9.6.8  ADCIBAT Register (SMBus address = 24h)
       9. 9.6.9  ADCIINCMPIN Register (SMBus address = 25h)
       10. 9.6.10 ADCVSYSVBAT Register (SMBus address = 26h)
       11. 9.6.11 ChargeOption1 Register (SMBus address = 30h) [reset = 3300h]
       12. 9.6.12 ChargeOption2 Register (SMBus address = 31h) [reset = 00B7]
       13. 9.6.13 ChargeOption3 Register (SMBus address = 32h) [reset = 0434h]
       14. 9.6.14 ProchotOption0 Register (SMBus address = 33h) [reset = 4A81h(2S~) 4A09(1S)]
       15. 9.6.15 ProchotOption1 Register (SMBus address = 34h) [reset = 41A0h]
       16. 9.6.16 ADCOption Register (SMBus address = 35h) [reset = 2000h]
       17. 9.6.17 ChargeOption4 Register (SMBus address = 36h) [reset = 0048h]
       18. 9.6.18 Vmin Active Protection Register (SMBus address = 37h) [reset = 006Ch(2s~4s)/0004h(1s)]
       19. 9.6.19 OTGVoltage Register (SMBus address = 3Bh) [reset = 09C4h]
       20. 9.6.20 OTGCurrent Register (SMBus address = 3Ch) [reset = 3C00h]
       21. 9.6.21 InputVoltage (VINDPM) Register (SMBus address = 3Dh) [reset = VBUS-1.28V]
       22. 9.6.22 VSYS_MIN Register (SMBus address = 3Eh) [reset value based on CELL_BATPRESZ pin setting]
       23. 9.6.23 IIN_HOST Register (SMBus address = 3Fh) [reset = 4100h]
       24. 9.6.24 ID Registers
           1. 9.6.24.1 ManufactureID Register (SMBus address = FEh) [reset = 0040h]
           2. 9.6.24.2 Device ID (DeviceAddress) Register (SMBus address = FFh) [reset = 00E1h]
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 ACP-ACN Input Filter
          2. 10.2.2.2 Inductor Selection
          3. 10.2.2.3 Input Capacitor
          4. 10.2.2.4 Output Capacitor
          5. 10.2.2.5 Power MOSFETs Selection
       3. 10.2.3 Application Curves
12. 11Power Supply Recommendations
13. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
       1. 12.2.1 Layout Example Reference Top View
       2. 12.2.2 Inner Layer Layout and Routing Example
14. 13Device and Documentation Support
    1. 13.1 Device Support
       1. 13.1.1 第三方產品免責聲明
    2. 13.2 Documentation Support
       1. 13.2.1 Related Documentation
    3. 13.3 接收文檔更新通知
    4. 13.4 支持資源
    5. 13.5 Trademarks
    6. 13.6 靜電放電警告
    7. 13.7 術語表
15. 14Mechanical, Packaging, and Orderable Information

BQ25720 具有系統功率監測器和處理器熱量監測器的 SMBus 1 至 4 節電池窄 VDC 降壓/升壓電池充電控制器