SLUSF21 june   2023 BQ79616

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Description (continued)
  7. 6 Pin Configuration and Functions
  8. 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
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power Supplies
        1. 8.3.1.1 AVAO_REF and AVDD_REF
        2. 8.3.1.2 LDOIN
        3. 8.3.1.3 AVDD
        4. 8.3.1.4 DVDD
        5. 8.3.1.5 CVDD and NEG5V
        6. 8.3.1.6 TSREF
      2. 8.3.2 Measurement System
        1. 8.3.2.1 Main ADC
          1. 8.3.2.1.1 Cell Voltage Measurements
            1. 8.3.2.1.1.1 Analog Front End
            2. 8.3.2.1.1.2 VC Channel Measurements
            3. 8.3.2.1.1.3 Post-ADC Digital LPF
            4. 8.3.2.1.1.4 BBP and BBN Measurements
          2. 8.3.2.1.2 Temperature Measurements
            1. 8.3.2.1.2.1 DieTemp1 Measurement
            2. 8.3.2.1.2.2 GPIOs and TSREF Measurements
          3. 8.3.2.1.3 Main ADC Operation Control
            1. 8.3.2.1.3.1 Operation Modes and Status
        2. 8.3.2.2 AUX ADC
          1. 8.3.2.2.1 AUX Cell Voltage Measurements
            1. 8.3.2.2.1.1 AUX Analog Front End
            2. 8.3.2.2.1.2 CB and BB Channel Measurements
          2. 8.3.2.2.2 AUX Temperature Measurements
            1. 8.3.2.2.2.1 DieTemp2 Measurement
            2. 8.3.2.2.2.2 AUX GPIO Measurements
          3. 8.3.2.2.3 MISC Measurements
          4. 8.3.2.2.4 AUX ADC Operation Control
        3. 8.3.2.3 Synchronization Between MAIN and AUX ADC Measurements
      3. 8.3.3 Cell Balancing
        1. 8.3.3.1 Set Up Cell Balancing
          1. 8.3.3.1.1 Step 1: Determine Balancing Channels
          2. 8.3.3.1.2 Step 2: Select Balancing Control Methods
          3. 8.3.3.1.3 Step 3a: Balancing Thermal Management
          4. 8.3.3.1.4 Step 3b: Option to Stop On Cell Voltage Threshold
          5. 8.3.3.1.5 Step 3c: Option to Stop at Fault
        2. 8.3.3.2 Cell Balancing in SLEEP Mode
        3. 8.3.3.3 Pause and Stop Cell Balancing
          1. 8.3.3.3.1 Cell Balancing Pause
          2. 8.3.3.3.2 Cell Balancing Stop
          3. 8.3.3.3.3 Remaining CB Time
        4. 8.3.3.4 Module Balancing
          1. 8.3.3.4.1 Start Module Balancing
          2. 8.3.3.4.2 Stop Module Balancing
      4. 8.3.4 Integrated Hardware Protectors
        1. 8.3.4.1 OVUV Protectors
          1. 8.3.4.1.1 OVUV Operation Modes
          2. 8.3.4.1.2 OVUV Control and Status
            1. 8.3.4.1.2.1 OVUV Control
            2. 8.3.4.1.2.2 OVUV Status
        2. 8.3.4.2 OTUT Protector
          1. 8.3.4.2.1 OTUT Operation Modes
          2. 8.3.4.2.2 OTUT Control and Status
            1. 8.3.4.2.2.1 OTUT Control
            2. 8.3.4.2.2.2 OTUT Status
      5. 8.3.5 GPIO Configuration
      6. 8.3.6 Communication, OTP, Diagnostic Control
        1. 8.3.6.1 Communication
          1. 8.3.6.1.1 Serial Interface
            1. 8.3.6.1.1.1 UART Physical Layer
              1. 8.3.6.1.1.1.1 UART Transmitter
              2. 8.3.6.1.1.1.2 UART Receiver
              3. 8.3.6.1.1.1.3 COMM CLEAR
            2. 8.3.6.1.1.2 Command and Response Protocol
              1. 8.3.6.1.1.2.1 Transaction Frame Structure
                1. 8.3.6.1.1.2.1.1 Frame Initialization Byte
                2. 8.3.6.1.1.2.1.2 Device Address Byte
                3. 8.3.6.1.1.2.1.3 Register Address Bytes
                4. 8.3.6.1.1.2.1.4 Data Bytes
                5. 8.3.6.1.1.2.1.5 CRC Bytes
                6. 8.3.6.1.1.2.1.6 Calculating Frame CRC Value
                7. 8.3.6.1.1.2.1.7 Verifying Frame CRC
              2. 8.3.6.1.1.2.2 Transaction Frame Examples
                1. 8.3.6.1.1.2.2.1 Single Device Read/Write
                2. 8.3.6.1.1.2.2.2 Stack Read/Write
                3. 8.3.6.1.1.2.2.3 Broadcast Read/Write
                4. 8.3.6.1.1.2.2.4 Broadcast Write Reverse Direction
          2. 8.3.6.1.2 Daisy Chain Interface
            1. 8.3.6.1.2.1 Daisy Chain Transmitter and Receiver Functionality
            2. 8.3.6.1.2.2 Daisy Chain Protocol
          3. 8.3.6.1.3 Start Communication
            1. 8.3.6.1.3.1 Identify Base and Stack
            2. 8.3.6.1.3.2 Auto-Addressing
              1. 8.3.6.1.3.2.1 Setting Up the Device Addresses
              2. 8.3.6.1.3.2.2 Setting Up COMM_CTRL[STACK_DEV] and [TOP_STACK]
              3. 8.3.6.1.3.2.3 Storing Device Address to OTP
            3. 8.3.6.1.3.3 Synchronize Daisy Chain DLL
            4. 8.3.6.1.3.4 Ring Communication
          4. 8.3.6.1.4 Communication Timeout
            1. 8.3.6.1.4.1 Short Communication Timeout
            2. 8.3.6.1.4.2 Long Communication Timeout
          5. 8.3.6.1.5 Communication Debug Mode
          6. 8.3.6.1.6 Multidrop Configuration
          7. 8.3.6.1.7 SPI Controller
          8. 8.3.6.1.8 SPI Loopback
        2. 8.3.6.2 Fault Handling
          1. 8.3.6.2.1 Fault Status Hierarchy
            1. 8.3.6.2.1.1 Debug Registers
          2. 8.3.6.2.2 Fault Masking and Reset
            1. 8.3.6.2.2.1 Fault Masking
            2. 8.3.6.2.2.2 Fault Reset
          3. 8.3.6.2.3 Fault Signaling
            1. 8.3.6.2.3.1 Fault Status Transmitting in ACTIVE Mode
            2. 8.3.6.2.3.2 Fault Status Transmitting in SLEEP Mode
            3. 8.3.6.2.3.3 Heartbeat and Fault Tone
        3. 8.3.6.3 Nonvolatile Memory
          1. 8.3.6.3.1 OTP Page Status
          2. 8.3.6.3.2 OTP Programming
        4. 8.3.6.4 Diagnostic Control/Status
          1. 8.3.6.4.1 Power Supplies Check
            1. 8.3.6.4.1.1 Power Supply Diagnostic Check
            2. 8.3.6.4.1.2 Power Supply BIST
          2. 8.3.6.4.2 Thermal Shutdown and Warning Check
            1. 8.3.6.4.2.1 Thermal Shutdown
            2. 8.3.6.4.2.2 Thermal Warning
          3. 8.3.6.4.3 Oscillators Watchdog
          4. 8.3.6.4.4 OTP Error Check
            1. 8.3.6.4.4.1 OTP CRC Test and Faults
            2. 8.3.6.4.4.2 OTP Margin Read
            3. 8.3.6.4.4.3 Error Check and Correct (ECC) OTP
          5. 8.3.6.4.5 Integrated Hardware Protector Check
            1. 8.3.6.4.5.1 Parity Check
            2. 8.3.6.4.5.2 OVUV and OTUT DAC Check
            3. 8.3.6.4.5.3 OVUV Protector BIST
            4. 8.3.6.4.5.4 OTUT Protector BIST
          6. 8.3.6.4.6 Diagnostic Through ADC Comparison
            1. 8.3.6.4.6.1 Cell Voltage Measurement Check
            2. 8.3.6.4.6.2 Temperature Measurement Check
            3. 8.3.6.4.6.3 Cell Balancing FETs Check
            4. 8.3.6.4.6.4 VC and CB Open Wire Check
      7. 8.3.7 Bus Bar Support
        1. 8.3.7.1 Bus Bar on BBP/BBN Pins
          1. 8.3.7.1.1 Typical Connection
          2. 8.3.7.1.2 Bus Bar Measurement
          3. 8.3.7.1.3 Cell Balancing Handling
          4. 8.3.7.1.4 Cell Voltage Diagnostic Control
        2. 8.3.7.2 Bus Bar on Individual VC Channel
          1. 8.3.7.2.1 Typical Connection
          2. 8.3.7.2.2 Bus Bar Measurement
          3. 8.3.7.2.3 Cell Balancing Handling
          4. 8.3.7.2.4 Cell Voltage Diagnostic Control
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power Modes
        1. 8.4.1.1 SHUTDOWN Mode
          1. 8.4.1.1.1 Exit SHUTDOWN Mode
          2. 8.4.1.1.2 Enter SHUTDOWN Mode
        2. 8.4.1.2 SLEEP Mode
          1. 8.4.1.2.1 Exit SLEEP Mode
          2. 8.4.1.2.2 Enter SLEEP Mode
        3. 8.4.1.3 ACTIVE Mode
          1. 8.4.1.3.1 Exit ACTIVE Mode
          2. 8.4.1.3.2 Enter ACTIVE Mode from SHUTDOWN Mode
          3. 8.4.1.3.3 Enter ACTIVE Mode from SLEEP Mode
      2. 8.4.2 Device Reset
      3. 8.4.3 Ping and Tone
        1. 8.4.3.1 Ping
        2. 8.4.3.2 Tone
        3. 8.4.3.3 Ping and Tone Propagation
    5. 8.5 Register Maps
      1. 8.5.1 OTP Shadow Register Summary
      2. 8.5.2 Read/Write Register Summary
      3. 8.5.3 Read-Only Register Summary
      4. 8.5.4 Register Field Descriptions
        1. 8.5.4.1  Device Addressing Setup
          1. 8.5.4.1.1 DIR0_ADDR_OTP
          2. 8.5.4.1.2 DIR1_ADDR_OTP
          3. 8.5.4.1.3 CUST_MISC1 through CUST_MISC8
          4. 8.5.4.1.4 DIR0_ADDR
          5. 8.5.4.1.5 DIR1_ADDR
        2. 8.5.4.2  Device ID and Scratch Pad
          1. 8.5.4.2.1 PARTID
          2. 8.5.4.2.2 DEV_REVID
          3. 8.5.4.2.3 DIE_ID1 through DIE_ID9
        3. 8.5.4.3  General Configuration and Control
          1. 8.5.4.3.1  DEV_CONF
          2. 8.5.4.3.2  ACTIVE_CELL
          3. 8.5.4.3.3  BBVC_POSN1
          4. 8.5.4.3.4  BBVC_POSN2
          5. 8.5.4.3.5  PWR_TRANSIT_CONF
          6. 8.5.4.3.6  COMM_TIMEOUT_CONF
          7. 8.5.4.3.7  TX_HOLD_OFF
          8. 8.5.4.3.8  STACK_RESPONSE
          9. 8.5.4.3.9  BBP_LOC
          10. 8.5.4.3.10 COMM_CTRL
          11. 8.5.4.3.11 CONTROL1
          12. 8.5.4.3.12 CONTROL2
          13. 8.5.4.3.13 CUST_CRC_HI
          14. 8.5.4.3.14 CUST_CRC_LO
          15. 8.5.4.3.15 CUST_CRC_RSLT_HI
          16. 8.5.4.3.16 CUST_CRC_RSLT_LO
        4. 8.5.4.4  Operation Status
          1. 8.5.4.4.1 DIAG_STAT
          2. 8.5.4.4.2 ADC_STAT1
          3. 8.5.4.4.3 ADC_STAT2
          4. 8.5.4.4.4 GPIO_STAT
          5. 8.5.4.4.5 BAL_STAT
          6. 8.5.4.4.6 DEV_STAT
        5. 8.5.4.5  ADC Configuration and Control
          1. 8.5.4.5.1 ADC_CONF1
          2. 8.5.4.5.2 ADC_CONF2
          3. 8.5.4.5.3 MAIN_ADC_CAL1
          4. 8.5.4.5.4 MAIN_ADC_CAL2
          5. 8.5.4.5.5 AUX_ADC_CAL1
          6. 8.5.4.5.6 AUX_ADC_CAL2
          7. 8.5.4.5.7 ADC_CTRL1
          8. 8.5.4.5.8 ADC_CTRL2
          9. 8.5.4.5.9 ADC_CTRL3
        6. 8.5.4.6  ADC Measurement Results
          1. 8.5.4.6.1  VCELL16_HI/LO
          2. 8.5.4.6.2  VCELL15_HI/LO
          3. 8.5.4.6.3  VCELL14_HI/LO
          4. 8.5.4.6.4  VCELL13_HI/LO
          5. 8.5.4.6.5  VCELL12_HI/LO
          6. 8.5.4.6.6  VCELL11_HI/LO
          7. 8.5.4.6.7  VCELL10_HI/LO
          8. 8.5.4.6.8  VCELL9_HI/LO
          9. 8.5.4.6.9  VCELL8_HI/LO
          10. 8.5.4.6.10 VCELL7_HI/LO
          11. 8.5.4.6.11 VCELL6_HI/LO
          12. 8.5.4.6.12 VCELL5_HI/LO
          13. 8.5.4.6.13 VCELL4_HI/LO
          14. 8.5.4.6.14 VCELL3_HI/LO
          15. 8.5.4.6.15 VCELL2_HI/LO
          16. 8.5.4.6.16 VCELL1_HI/LO
          17. 8.5.4.6.17 BUSBAR_HI/LO
          18. 8.5.4.6.18 TSREF_HI/LO
          19. 8.5.4.6.19 GPIO1_HI/LO
          20. 8.5.4.6.20 GPIO2_HI/LO
          21. 8.5.4.6.21 GPIO3_HI/LO
          22. 8.5.4.6.22 GPIO4_HI/LO
          23. 8.5.4.6.23 GPIO5_HI/LO
          24. 8.5.4.6.24 GPIO6_HI/LO
          25. 8.5.4.6.25 GPIO7_HI/LO
          26. 8.5.4.6.26 GPIO8_HI/LO
          27. 8.5.4.6.27 DIETEMP1_HI/LO
          28. 8.5.4.6.28 DIETEMP2_HI/LO
          29. 8.5.4.6.29 AUX_CELL_HI/LO
          30. 8.5.4.6.30 AUX_GPIO_HI/LO
          31. 8.5.4.6.31 AUX_BAT_HI/LO
          32. 8.5.4.6.32 AUX_REFL_HI/LO
          33. 8.5.4.6.33 AUX_VBG2_HI/LO
          34. 8.5.4.6.34 AUX_AVAO_REF_HI/LO
          35. 8.5.4.6.35 AUX_AVDD_REF_HI/LO
          36. 8.5.4.6.36 AUX_OV_DAC_HI/LO
          37. 8.5.4.6.37 AUX_UV_DAC_HI/LO
          38. 8.5.4.6.38 AUX_OT_OTCB_DAC_HI/LO
          39. 8.5.4.6.39 AUX_UT_DAC_HI/LO
          40. 8.5.4.6.40 AUX_VCBDONE_DAC_HI/LO
          41. 8.5.4.6.41 AUX_VCM_HI/LO
          42. 8.5.4.6.42 REFOVDAC_HI/LO
          43. 8.5.4.6.43 DIAG_MAIN_HI/LO
          44. 8.5.4.6.44 DIAG_AUX_HI/LO
        7. 8.5.4.7  Balancing Configuration, Control and Status
          1. 8.5.4.7.1  CB_CELL16_CTRL through CB_CELL1_CTRL
          2. 8.5.4.7.2  VMB_DONE_THRESH
          3. 8.5.4.7.3  MB_TIMER_CTRL
          4. 8.5.4.7.4  VCB_DONE_THRESH
          5. 8.5.4.7.5  OTCB_THRESH
          6. 8.5.4.7.6  BAL_CTRL1
          7. 8.5.4.7.7  BAL_CTRL2
          8. 8.5.4.7.8  BAL_CTRL3
          9. 8.5.4.7.9  CB_COMPLETE1
          10. 8.5.4.7.10 CB_COMPLETE2
          11. 8.5.4.7.11 BAL_TIME
        8. 8.5.4.8  Protector Configuration and Control
          1. 8.5.4.8.1 OV_THRESH
          2. 8.5.4.8.2 UV_THRESH
          3. 8.5.4.8.3 UV_DISABLE1
          4. 8.5.4.8.4 UV_DISABLE2
          5. 8.5.4.8.5 OTUT_THRESH
          6. 8.5.4.8.6 OVUV_CTRL
          7. 8.5.4.8.7 OTUT_CTRL
        9. 8.5.4.9  GPIO Configuration
          1. 8.5.4.9.1 GPIO_CONF1
          2. 8.5.4.9.2 GPIO_CONF2
          3. 8.5.4.9.3 GPIO_CONF3
          4. 8.5.4.9.4 GPIO_CONF4
        10. 8.5.4.10 SPI Controller
          1. 8.5.4.10.1 SPI_CONF
          2. 8.5.4.10.2 SPI_EXE
          3. 8.5.4.10.3 SPI_TX3, SPI_TX2, and SPI_TX1
          4. 8.5.4.10.4 SPI_RX3, SPI_RX2, and SPI_RX1
        11. 8.5.4.11 Diagnostic Control
          1. 8.5.4.11.1  DIAG_OTP_CTRL
          2. 8.5.4.11.2  DIAG_COMM_CTRL
          3. 8.5.4.11.3  DIAG_PWR_CTRL
          4. 8.5.4.11.4  DIAG_CBFET_CTRL1
          5. 8.5.4.11.5  DIAG_CBFET_CTRL2
          6. 8.5.4.11.6  DIAG_COMP_CTRL1
          7. 8.5.4.11.7  DIAG_COMP_CTRL2
          8. 8.5.4.11.8  DIAG_COMP_CTRL3
          9. 8.5.4.11.9  DIAG_COMP_CTRL4
          10. 8.5.4.11.10 DIAG_PROT_CTRL
        12. 8.5.4.12 Fault Configuration and Reset
          1. 8.5.4.12.1 FAULT_MSK1
          2. 8.5.4.12.2 FAULT_MSK2
          3. 8.5.4.12.3 FAULT_RST1
          4. 8.5.4.12.4 FAULT_RST2
        13. 8.5.4.13 Fault Status
          1. 8.5.4.13.1  FAULT_SUMMARY
          2. 8.5.4.13.2  FAULT_COMM1
          3. 8.5.4.13.3  FAULT_COMM2
          4. 8.5.4.13.4  FAULT_COMM3
          5. 8.5.4.13.5  FAULT_OTP
          6. 8.5.4.13.6  FAULT_SYS
          7. 8.5.4.13.7  FAULT_PROT1
          8. 8.5.4.13.8  FAULT_PROT2
          9. 8.5.4.13.9  FAULT_OV1
          10. 8.5.4.13.10 FAULT_OV2
          11. 8.5.4.13.11 FAULT_UV1
          12. 8.5.4.13.12 FAULT_UV2
          13. 8.5.4.13.13 FAULT_OT
          14. 8.5.4.13.14 FAULT_UT
          15. 8.5.4.13.15 FAULT_COMP_GPIO
          16. 8.5.4.13.16 FAULT_COMP_VCCB1
          17. 8.5.4.13.17 FAULT_COMP_VCCB2
          18. 8.5.4.13.18 FAULT_COMP_VCOW1
          19. 8.5.4.13.19 FAULT_COMP_VCOW2
          20. 8.5.4.13.20 FAULT_COMP_CBOW1
          21. 8.5.4.13.21 FAULT_COMP_CBOW2
          22. 8.5.4.13.22 FAULT_COMP_CBFET1
          23. 8.5.4.13.23 FAULT_COMP_CBFET2
          24. 8.5.4.13.24 FAULT_COMP_MISC
          25. 8.5.4.13.25 FAULT_PWR1
          26. 8.5.4.13.26 FAULT_PWR2
          27. 8.5.4.13.27 FAULT_PWR3
        14. 8.5.4.14 Debug Control and Status
          1. 8.5.4.14.1  DEBUG_CTRL_UNLOCK
          2. 8.5.4.14.2  DEBUG_COMM_CTRL1
          3. 8.5.4.14.3  DEBUG_COMM_CTRL2
          4. 8.5.4.14.4  DEBUG_COMM_STAT
          5. 8.5.4.14.5  DEBUG_UART_RC
          6. 8.5.4.14.6  DEBUG_UART_RR_TR
          7. 8.5.4.14.7  DEBUG_COMH_BIT
          8. 8.5.4.14.8  DEBUG_COMH_RC
          9. 8.5.4.14.9  DEBUG_COMH_RR_TR
          10. 8.5.4.14.10 DEBUG_COML_BIT
          11. 8.5.4.14.11 DEBUG_COML_RC
          12. 8.5.4.14.12 DEBUG_COML_RR_TR
          13. 8.5.4.14.13 DEBUG_UART_DISCARD
          14. 8.5.4.14.14 DEBUG_COMH_DISCARD
          15. 8.5.4.14.15 DEBUG_COML_DISCARD
          16. 8.5.4.14.16 DEBUG_UART_VALID_HI/LO
          17. 8.5.4.14.17 DEBUG_COMH_VALID_HI/LO
          18. 8.5.4.14.18 DEBUG_COML_VALID_HI/LO
          19. 8.5.4.14.19 DEBUG_OTP_SEC_BLK
          20. 8.5.4.14.20 DEBUG_OTP_DED_BLK
        15. 8.5.4.15 OTP Programming Control and Status
          1. 8.5.4.15.1 OTP_PROG_UNLOCK1A through OTP_PROG_UNLOCK1D
          2. 8.5.4.15.2 OTP_PROG_UNLOCK2A through OTP_PROG_UNLOCK2D
          3. 8.5.4.15.3 OTP_PROG_CTRL
          4. 8.5.4.15.4 OTP_ECC_TEST
          5. 8.5.4.15.5 OTP_ECC_DATAIN1 through OTP_ECC_DATAIN9
          6. 8.5.4.15.6 OTP_ECC_DATAOUT1 through OTP_ECC_DATAOUT9
          7. 8.5.4.15.7 OTP_PROG_STAT
          8. 8.5.4.15.8 OTP_CUST1_STAT
          9. 8.5.4.15.9 OTP_CUST2_STAT
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Base Device Application Circuit
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Cell Sensing and Balancing Inputs
          2. 9.2.1.2.2 BAT and External NPN
          3. 9.2.1.2.3 Power Supplies, Reference Input
          4. 9.2.1.2.4 GPIO For Thermistor Inputs
          5. 9.2.1.2.5 Internal Balancing Current
          6. 9.2.1.2.6 UART, NFAULT
          7. 9.2.1.2.7 Daisy Chain Isolation
            1. 9.2.1.2.7.1 Devices Connected on the Same PCB
            2. 9.2.1.2.7.2 Devices Connected on Different PCBs
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Daisy Device Application Circuit
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Ground Planes
      2. 11.1.2 Bypass Capacitors for Power Supplies and Reference
      3. 11.1.3 Cell Voltage Sensing
      4. 11.1.4 Daisy Chain Communication
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6 Pin Configuration and Functions

GUID-20220825-SS0I-7LK3-SPGQ-B1STBRLL2N2B-low.svg
Table 6-1 Pin Functions
PIN TYPE DESCRIPTION
NAME No.
BQ79616
BAT 1 P Power supply input and top of module measurement input. Connect to the top cell of the battery module.
NPN 48 P Connect to the base of an external NPN transistor.
LDOIN 47 P 6-V preregulated analog power supply input/sense pin. Connect to the emitter of the external NPN transistor and connect a 0.1-µF decoupling capacitor to CVSS.
AVDD 38 P 5-V regulated output. AVDD supplies the internal analog circuits. Bypass AVDD with a capacitor to AVSS.
AVSS 39 GND Analog ground. Ground connection for internal analog circuits. Connect DVSS, CVSS, REFHM, and AVSS externally.
NEG5V 44 P Negative 5-V charge pump used for daisy chain and Main ADC. Connect with a capacitor to CVSS.
DVDD 49 P 1.8-V regulated output. DVDD supplies the internal digital circuits. Bypass DVDD with a capacitor to DVSS.
DVSS 50 GND Digital ground. Ground connection for internal digital logics. Connect DVSS, CVSS, REFHM, and AVSS externally.
CVDD 45 P 5-V daisy chain communication and I/Os power supply. CVDD supplies the stack daisy chain communication transceiver circuit and the I/O pins. This power supply also supports an additional 10-mA external load in ACTIVE and SLEEP.
CVSS 46 GND Daisy chain communication ground. Ground connection for internal daisy chain transceivers. Connect DVSS, CVSS, REFHM, and AVSS externally.
TSREF 51 P 5-V bias voltage for NTC thermistor. Connect TSREF to the top of the NTC resistor divider network to the GPIOs when they are configured for NTC temperature monitoring. Bypass TSREF with a capacitor to CVSS.
REFHP 37 P Precision reference output pin. Bypass with a capacitor to REFHM.
REFHM 36 GND Precision reference ground. Ground connection for the internal precision reference. Connect DVSS, CVSS, REFHM, and AVSS externally.
VC16 3 I Cell voltage sense input. Connect to the positive terminal of cell 16. Connect a differential RC filter to VC15. Tie unused NC pins to BAT pin as explained in Cell Connections.
VC15 5 I Cell voltage sense input. Connect to the positive terminal of cell 15. Connect a differential RC filter to VC14.Tie unused NC pins to BAT pin as explained in Cell Connections.
VC14 7 I Cell voltage sense input. Connect to the positive terminal of cell 14. Connect a differential RC filter to VC13.Tie unused NC pins to BAT pin as explained in Cell Connections.
VC13 9 I Cell voltage sense input. Connect to the positive terminal of cell 13. Connect a differential RC filter to VC12. Tie unused NC pins to BAT pin as explained in Cell Connections.
VC12 11 I Cell voltage sense input. Connect to the positive terminal of cell 12. Connect a differential RC filter to VC11.
VC11 13 I Cell voltage sense input. Connect to the positive terminal of cell 11. Connect a differential RC filter to VC10.
VC10 15 I Cell voltage sense input. Connect to the positive terminal of cell 10. Connect a differential RC filter to VC9.
VC9 17 I Cell voltage sense input. Connect to the positive terminal of cell 9. Connect a differential RC filter to VC8.
VC8 19 I Cell voltage sense input. Connect to the positive terminal of cell 8. Connect a differential RC filter to VC7.
VC7 21 I Cell voltage sense input. Connect to the positive terminal of cell 7. Connect a differential RC filter to VC6.
VC6 23 I Cell voltage sense input. Connect to the positive terminal of cell 6. Connect a differential RC filter to VC5.
VC5 25 I Cell voltage sense input. Connect to the positive terminal of cell 5. Connect a differential RC filter to VC4.
VC4 27 I Cell voltage sense input. Connect to the positive terminal of cell 4. Connect a differential RC filter to VC3.
VC3 29 I Cell voltage sense input. Connect to the positive terminal of cell 3. Connect a differential RC filter to VC2.
VC2 31 I Cell voltage sense input. Connect to the positive terminal of cell 2. Connect a differential RC filter to VC1.
VC1 33 I Cell voltage sense input. Connect to the positive terminal of cell 1. Connect a differential RC filter to VC0.
VC0 35 I Cell voltage sense input. Connect to the negative terminal of cell 1. Connect a differential RC filter to AVSS.
CB16 2 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 16 with a differential RC filter to CB15. The filter resistor also sets the internal balance current. Tie unused CB16 pin via RC to BAT pin and tie unused NC pins to BAT pin as explained in Cell Connections.
CB15 4 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 15 with a differential RC filter to CB14. The filter resistor also sets the internal balance current. Tie unused NC pins to BAT pin as explained in Cell Connections.
CB14 6 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 14 with a differential RC filter to CB13. The filter resistor also sets the internal balance current. Tie unused NC pins to BAT pin as explained in Cell Connections.
CB13 8 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 13 with a differential RC filter to CB12. The filter resistor also sets the internal balance current. Tie unused NC pins to BAT pin as explained in Cell Connections.
CB12 10 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 12 with a differential RC filter to CB11. The filter resistor also sets the internal balance current.
CB11 12 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 11 with a differential RC filter to CB10. The filter resistor also sets the internal balance current.
CB10 14 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 10 with a differential RC filter to CB9. The filter resistor also sets the internal balance current.
CB9 16 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 9 with a differential RC filter to CB8. The filter resistor also sets the internal balance current.
CB8 18 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 8 with a differential RC filter to CB7. The filter resistor also sets the internal balance current.
CB7 20 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 7 with a differential RC filter to CB6. The filter resistor also sets the internal balance current.
CB6 22 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 6 with a differential RC filter to CB5. The filter resistor also sets the internal balance current.
CB5 24 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 5 with a differential RC filter to CB4. The filter resistor also sets the internal balance current.
CB4 26 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 4 with a differential RC filter to CB3. The filter resistor also sets the internal balance current.
CB3 28 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 3 with a differential RC filter to CB2. The filter resistor also sets the internal balance current.
CB2 30 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 2 with a differential RC filter to CB1. The filter resistor also sets the internal balance current.
CB1 32 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect this pin to the positive terminal of cell 1 with a differential RC filter to CB0. The filter resistor also sets the internal balance current.
CB0 34 I/O Cell balance connection. This pin is connected to the internal cell balancing FET. Connect to the negative terminal of cell 1 with differential RC filter to AVSS. The filter resistor also sets the internal balance current.
BBP 64 I Bus bar connection. With BBP and BBN connecting to each end of a bus bar, this channel provides a differential input to the ADC measurement with a 5x gain.
BBN 63 I Bus bar connection. With BBP and BBN connecting to each end of a bus bar, this channel provides a differential input to the ADC measurement with a 5x gain.
RX 52 I UART receiver input. Pull up to CVDD with an external resistor and connect the device RX to the TX output of the host MCU. If unused (for example, for stack devices), connect RX to CVDD.
TX 53 O UART transmitter output. Connect device TX to RX input of the host MCU and will be pulled up from the host side. If unused (for example, for stack devices), leave it floating.
COMHP 43 I/O Vertical bidirectional communication interface for daisy chain connection. High side (north side) differential I/O. Will connect to the low side (south side) COMLP and COMLN of the lower adjacent device in the daisy chain configuration. If unused, connect COMHP and COMHN with a 1-kΩ resistor.
COMHN 42 I/O
COMLP 40 I/O Vertical bidirectional communication interface for daisy chain connection. Low side (south side) differential I/O. Will connect to the high side (north side) COMHP and COMHN of the upper adjacent device in the daisy chain configuration. If unused, connect COMLP and COMLN with a 1-kΩ resistor.
COMLN 41 I/O
NFAULT 62 O Fault indication output. Active low. If used on the base device, pull up NFAULT to CVDD with a pullup resistor and connect NFAULT to host MCU GPIO. If unused, leave it unconnected.
GPIO1 61 I/O General purpose input/output, configuration options are:
  • For external NTC thermistor connection, connect NTC thermistor to the pin and pull up to TSREF. Used as input to ADC and OT and UT hardware comparators
  • For external DC voltage measurement, configured as input to ADC
  • Generic digital input/output
  • Use as I/O for SPI controller.
GPIO2 60 I/O
GPIO3 59 I/O
GPIO4 58 I/O
GPIO5 57 I/O
GPIO6 56 I/O
GPIO7 55 I/O
GPIO8 54 I/O