ZHCSK78A september   2019  – august 2023 BQ21061

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Linear Charger and Power Path
        1. 7.3.1.1 Battery Charging Process
        2. 7.3.1.2 JEITA and Battery Temperature Dependent Charging
        3. 7.3.1.3 Input Voltage Based Dynamic Power Management (VINDPM) and Dynamic Power Path Management (DPPM)
        4. 7.3.1.4 Battery Supplement Mode
      2. 7.3.2  Protection Mechanisms
        1. 7.3.2.1 Input Over-Voltage Protection
        2. 7.3.2.2 Safety Timer and I2C Watchdog Timer
        3. 7.3.2.3 Thermal Protection and Thermal Charge Current Foldback
        4. 7.3.2.4 Battery Short and Over Current Protection
        5. 7.3.2.5 PMID Short Circuit
      3. 7.3.3  VDD LDO
      4. 7.3.4  Load Switch/LDO Output and Control
      5. 7.3.5  PMID Power Control
      6. 7.3.6  System Voltage (PMID) Regulation
      7. 7.3.7  MR Wake and Reset Input
        1. 7.3.7.1 MR Wake or Short Button Press Functions
        2. 7.3.7.2 MR Reset or Long Button Press Functions
      8. 7.3.8  14-Second Watchdog for HW Reset
      9. 7.3.9  Faults Conditions and Interrupts ( INT)
        1. 7.3.9.1 Flags and Fault Condition Response
      10. 7.3.10 Power Good ( PG) Pin
      11. 7.3.11 External NTC Monitoring (TS)
        1. 7.3.11.1 TS Thresholds
      12. 7.3.12 I2C Interface
        1. 7.3.12.1 F/S Mode Protocol
    4. 7.4 Device Functional Modes
      1. 7.4.1 Ship Mode
      2. 7.4.2 Low Power
      3. 7.4.3 Active Battery
      4. 7.4.4 Charger/Adapter Mode
      5. 7.4.5 Power-Up/Down Sequencing
    5. 7.5 Register Map
      1. 7.5.1 I2C Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input (IN/PMID) Capacitors
        2. 8.2.2.2 VDD, LDO Input and Output Capacitors
        3. 8.2.2.3 TS
        4. 8.2.2.4 Recommended Passive Components
      3. 8.2.3 Application Curves
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 第三方产品免责声明
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 接收文档更新通知
    4. 11.4 支持资源
    5. 11.5 静电放电警告
    6. 11.6 Trademarks
    7. 11.7 术语表
  13. 12Mechanical, Packaging, and Orderable Information

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7.3.9.1 Flags and Fault Condition Response

Table 7-3 below details the BQ21061 behavior when a fault condition occurs.

Table 7-3 Interrupt Triggers and Fault Condition Response
FAULT / FLAGDESCRIPTIONINTERRUPT TRIGGER BASED ON STATUS BIT CHANGECHARGER BEHAVIORCHARGER SAFETY TIMERPMID BEHAVIOR
CHRG_CV_FLAGSet when charger enters Constant Voltage operationRising EdgeEnabledNo effectIN powered if VIN is valid
CHARGE_DONE_FLAGSet when charger reaches terminationRising EdgePaused- Charging resumes with VIN or CE toggle or when VRCH is reachedResetIN powered if VIN is valid
IINLIM_ACTIVE_FLAGSet when Input Current Limit loop is activeRising EdgeEnabled. Reduced charge current.Doubled if option is enabledIN powered VIN powered unless supplement mode condition is met.
VDPPM_ACTIVE_FLAGSet when DPPM loop is activeRising EdgeEnabled. Reduced charge current.Doubled if option is enabledVIN powered unless supplement mode condition is met.
VINDPM_ACTIVE_FLAGSet when VINDPM loop is activeRising EdgeEnabled. Reduced charge current.Doubled if option is enabledVIN powered unless supplement mode condition is met.
THERMREG_ACTIVESet when Thermal Charge Current Foldback (Thermal Regulation) loop is activeRising EdgeEnabled. Reduced charge current.Doubled if option is enabledVIN powered unless supplement mode condition is met.
VIN_PGOOD_FLAGSet when VIN changes PGOOD statusRising and Falling EdgeIf VIN_PGOOD_STAT is low, charging is disabled.ResetVIN powered (if VIN_PGOOD_STAT=1) unless PMID_MODE is not 00.
VIN_OVP_FAULT_FLAGSet when VIN > VOVPRising EdgeCharging is paused until condition disappearsResetBAT powered
BAT_OCP_FAULT_FLAGSet when IBAT > IBATOCPRising EdgeDisabled (BAT only condition)N/ADisconnect BAT
BAT_UVLO_FAULT_FLAGSet when VBAT < VBATUVLORising EdgeEnabledNo effectIN powered of VIN is valid
TS_COLD_FLAGSet when VTS > VTS_COLDRising EdgeCharging paused until condition is clearedPausedIN powered of VIN is valid
TS_COOL_FLAGSet when VTS_COLD > VTS > VTS_COOLRising EdgeEnabled. Reduced charge current.Doubled if option is enabledIN powered of VIN is valid
TS_WARM_FLAGSet when VTS_HOT < VTS < VTS_WARMRising EdgeEnabled. Reduce battery regulation voltage.No effectIN powered of VIN is valid
TS_HOT_FLAGSet when VTS < VHOTRising EdgeCharging paused until condition is clearedPausedIN powered of VIN is valid
TS_OPEN_FLAGSet when VTS > VTS_OPENRising EdgeCharging is paused until condition disappearsPausedN/A
WD_FAULT_FLAGSet when I2C watchdog timer expiresRising EdgeEnabledN/AN/A
SAFETY_TMR_FAULT_FLAGSet when safety Timer expires. Cleared after VIN or CE toggleRising EdgeDisabled until VIN or CE toggleReset after flag is clearedIN powered of VIN is valid
LS_LDO_OCP_FAULT_FLAGSet when LDO output current exceeds OCP conditionRising EdgeN/AN/AN/A
MRWAKE1_TIMEOUT_FLAGSet when MR is low for at least tWAKE1Rising EdgeN/AN/AN/A
MRWAKE2_TIMEOUT_FLAGSet when MR is low for at least tWAKE2Rising EdgeN/AN/AN/A
MRRESET_WARN_FLAGSet when MR is low for at least tRESETWARNRising EdgeN/AN/AN/A
TSHUTNo flag. Die temperature exceeds thermal shutdown threshold is reachedN/ADisabledDisabledDisabled