SLUSBZ5D January   2015  – April 2021 BQ34Z100-G1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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: Power-On Reset
    6. 6.6  Electrical Characteristics: LDO Regulator
    7. 6.7  Electrical Characteristics: Internal Temperature Sensor Characteristics
    8. 6.8  Electrical Characteristics: Low-Frequency Oscillator
    9. 6.9  Electrical Characteristics: High-Frequency Oscillator
    10. 6.10 Electrical Characteristics: Integrating ADC (Coulomb Counter) Characteristics
    11. 6.11 Electrical Characteristics: ADC (Temperature and Cell Measurement) Characteristics
    12. 6.12 Electrical Characteristics: Data Flash Memory Characteristics
    13. 6.13 Timing Requirements: HDQ Communication
    14. 6.14 Timing Requirements: I2C-Compatible Interface
    15. 6.15 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Data Commands
        1. 7.3.1.1  Standard Data Commands
        2. 7.3.1.2  Control(): 0x00/0x01
          1. 7.3.1.2.1  CONTROL_STATUS: 0x0000
          2. 7.3.1.2.2  DEVICE TYPE: 0x0001
          3. 7.3.1.2.3  FW_VERSION: 0x0002
          4. 7.3.1.2.4  HW_VERSION: 0x0003
          5. 7.3.1.2.5  RESET_DATA: 0x0005
          6. 7.3.1.2.6  PREV_MACWRITE: 0x0007
          7. 7.3.1.2.7  CHEM ID: 0x0008
          8. 7.3.1.2.8  BOARD_OFFSET: 0x0009
          9. 7.3.1.2.9  CC_OFFSET: 0x000A
          10. 7.3.1.2.10 CC_OFFSET_SAVE: 0x000B
          11. 7.3.1.2.11 DF_VERSION: 0x000C
          12. 7.3.1.2.12 SET_FULLSLEEP: 0x0010
          13. 7.3.1.2.13 STATIC_CHEM_DF_CHKSUM: 0x0017
          14. 7.3.1.2.14 SEALED: 0x0020
          15. 7.3.1.2.15 IT ENABLE: 0x0021
          16. 7.3.1.2.16 CAL_ENABLE: 0x002D
          17. 7.3.1.2.17 RESET: 0x0041
          18. 7.3.1.2.18 EXIT_CAL: 0x0080
          19. 7.3.1.2.19 ENTER_CAL: 0x0081
          20. 7.3.1.2.20 OFFSET_CAL: 0x0082
        3. 7.3.1.3  StateOfCharge(): 0x02
        4. 7.3.1.4  MaxError(): 0x03
        5. 7.3.1.5  RemainingCapacity(): 0x04/0x05
        6. 7.3.1.6  FullChargeCapacity(): 0x06/07
        7. 7.3.1.7  Voltage(): 0x08/0x09
        8. 7.3.1.8  AverageCurrent(): 0x0A/0x0B
        9. 7.3.1.9  Temperature(): 0x0C/0x0D
        10. 7.3.1.10 Flags(): 0x0E/0x0F
        11. 7.3.1.11 FlagsB(): 0x12/0x13
        12. 7.3.1.12 Current(): 0x10/0x11
      2. 7.3.2  Extended Data Commands
        1. 7.3.2.1  AverageTimeToEmpty(): 0x18/0x19
        2. 7.3.2.2  AverageTimeToFull(): 0x1A/0x1B
        3. 7.3.2.3  PassedCharge(): 0x1C/0x1D
        4. 7.3.2.4  DOD0Time(): 0x1E/0x1F
        5. 7.3.2.5  AvailableEnergy(): 0x24/0x25
        6. 7.3.2.6  AveragePower(): 0x26/0x27
        7. 7.3.2.7  SerialNumber(): 0x28/0x29
        8. 7.3.2.8  InternalTemperature(): 0x2A/0x2B
        9. 7.3.2.9  CycleCount(): 0x2C/0x2D
        10. 7.3.2.10 StateOfHealth(): 0x2E/0x2F
        11. 7.3.2.11 ChargeVoltage(): 0x30/0x31
        12. 7.3.2.12 ChargeCurrent(): 0x32/0x33
        13. 7.3.2.13 PackConfiguration(): 0x3A/0x3B
        14. 7.3.2.14 DesignCapacity(): 0x3C/0x3D
        15. 7.3.2.15 DataFlashClass(): 0x3E
        16. 7.3.2.16 DataFlashBlock(): 0x3F
        17. 7.3.2.17 AuthenticateData/BlockData(): 0x40…0x53
        18. 7.3.2.18 AuthenticateChecksum/BlockData(): 0x54
        19. 7.3.2.19 BlockData(): 0x55…0x5F
        20. 7.3.2.20 BlockDataChecksum(): 0x60
        21. 7.3.2.21 BlockDataControl(): 0x61
        22. 7.3.2.22 GridNumber(): 0x62
        23. 7.3.2.23 LearnedStatus(): 0x63
        24. 7.3.2.24 Dod@Eoc(): 0x64/0x65
        25. 7.3.2.25 QStart(): 0x66/0x67
        26. 7.3.2.26 TrueRC(): 0x68/0x69
        27. 7.3.2.27 TrueFCC(): 0x6A/0x6B
        28. 7.3.2.28 StateTime(): 0x6C/0x6D
        29. 7.3.2.29 QmaxPassedQ(): 0x6E/0x6F
        30. 7.3.2.30 DOD0(): 0x70/0x71
        31. 7.3.2.31 QmaxDod0(): 0x72/0x73
        32. 7.3.2.32 QmaxTime(): 0x74/0x75
      3. 7.3.3  Data Flash Interface
        1. 7.3.3.1 Accessing Data Flash
        2. 7.3.3.2 Manufacturer Information Block
        3. 7.3.3.3 Access Modes
        4. 7.3.3.4 Sealing/Unsealing Data Flash Access
      4. 7.3.4  Data Flash Summary
      5. 7.3.5  Fuel Gauging
      6. 7.3.6  Impedance Track Variables
        1. 7.3.6.1  Load Mode
        2. 7.3.6.2  Load Select
        3. 7.3.6.3  Reserve Cap-mAh
        4. 7.3.6.4  Reserve Cap-mWh/cWh
        5. 7.3.6.5  Design Energy Scale
        6. 7.3.6.6  Dsg Current Threshold
        7. 7.3.6.7  Chg Current Threshold
        8. 7.3.6.8  Quit Current, Dsg Relax Time, Chg Relax Time, and Quit Relax Time
        9. 7.3.6.9  Qmax
        10. 7.3.6.10 Update Status
        11. 7.3.6.11 Avg I Last Run
        12. 7.3.6.12 Avg P Last Run
        13. 7.3.6.13 Cell Delta Voltage
        14. 7.3.6.14 Ra Tables
        15. 7.3.6.15 StateOfCharge() Smoothing
        16. 7.3.6.16 Charge Efficiency
        17. 7.3.6.17 Lifetime Data Logging
      7. 7.3.7  Device Configuration
        1. 7.3.7.1 Pack Configuration Register
        2. 7.3.7.2 Pack Configuration B Register
        3. 7.3.7.3 Pack Configuration C Register
      8. 7.3.8  Voltage Measurement and Calibration
        1. 7.3.8.1 1S Example
        2. 7.3.8.2 7S Example
        3. 7.3.8.3 Autocalibration
      9. 7.3.9  Temperature Measurement
      10. 7.3.10 Overtemperature Indication
        1. 7.3.10.1 Overtemperature: Charge
        2. 7.3.10.2 Overtemperature: Discharge
      11. 7.3.11 Charging and Charge Termination Indication
      12. 7.3.12 SCALED Mode
      13. 7.3.13 LED Display
      14. 7.3.14 Alert Signal
      15. 7.3.15 Communications
        1. 7.3.15.1 Authentication
        2. 7.3.15.2 Key Programming
        3. 7.3.15.3 Executing an Authentication Query
        4. 7.3.15.4 HDQ Single-Pin Serial Interface
        5. 7.3.15.5 I2C Interface
        6. 7.3.15.6 Switching Between I2C and HDQ Modes
          1. 7.3.15.6.1 Converting to HDQ Mode
          2. 7.3.15.6.2 Converting to I2C Mode
      16. 7.3.16 Power Control
        1. 7.3.16.1 Reset Functions
        2. 7.3.16.2 Wake-Up Comparator
        3. 7.3.16.3 Flash Updates
    4. 7.4 Device Functional Modes
      1. 7.4.1 NORMAL Mode
      2. 7.4.2 SLEEP Mode
      3. 7.4.3 FULL SLEEP Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Step-by-Step Design Procedure
          1. 8.2.2.1.1 STEP 1: Review and Modify the Data Flash Configuration Data.
          2. 8.2.2.1.2 STEP 2: Review and Modify the Data Flash Configuration Registers.
          3. 8.2.2.1.3 STEP 3: Design and Configure the Voltage Divider.
          4. 8.2.2.1.4 STEP 4: Determine the Sense Resistor Value.
          5. 8.2.2.1.5 STEP 5: Review and Modify the Data Flash Gas Gauging Configuration, Data, and State.
          6. 8.2.2.1.6 STEP 6: Determine and Program the Chemical ID.
          7. 8.2.2.1.7 STEP 7: Calibrate.
          8. 8.2.2.1.8 STEP 8: Run an Optimization Cycle.
      3. 8.2.3 Battery Chemistry Configuration
        1. 8.2.3.1 Battery Chemistry Charge Termination
      4. 8.2.4 Replaceable Battery Systems
      5. 8.2.5 Digital Interface Options
      6. 8.2.6 Display Options
      7. 8.2.7 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Introduction
      2. 10.1.2 Power Supply Decoupling Capacitor
      3. 10.1.3 Capacitors
      4. 10.1.4 Communication Line Protection Components
    2. 10.2 Layout Example
      1. 10.2.1 Ground System
      2. 10.2.2 Kelvin Connections
      3. 10.2.3 Board Offset Considerations
      4. 10.2.4 ESD Spark Gap
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.13 LED Display

The device supports multiple options for using one to 16 LEDs as an output device to display the remaining state of charge, or, if Pack Configuration C [SOH_DISP] is set, then state-of-health. The LED/COMM Configuration register determines the behavior.

Table 7-20 LED/COMM Configuration Bits
Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0
EXT_LED3EXT_LED2EXT_LED1EXT_LED0LED_ONLED_Mode2LED_Mode1LED_Mode0

Bits 0, 1, 2 are a code for one of five modes. 0 = No LED, 1 = Single LED, 2 = Four LEDs, 3 = External LEDs with I2C comm, 4 = External LEDs with HDQ comm.

Setting Bit 3, LED_ON, will cause the LED display to be always on, except in Single LED mode where it is not applicable. When clear (default), the LED pattern will only be displayed after holding an LED display button for one to two seconds. The button applies 2.5 V from REG25 pin 7 to VEN pin 2 (refer to Section 8.2). The LED Hold Time parameter may be used to configure how long the LED display remains on if LED_ON is clear. LED Hold Time configures the update interval for the LED display if LED_ON is set.

Bits 4, 5, 6, and 7 are a binary code for number of external LEDs. Code 0 is reserved. Codes 1 through 15 represents 2~16 external LEDs. So, number of External LEDs is 1 + Value of the 4-bit binary code. Display of Remaining Capacity RemainingCapacity()or StateOfHealth() will be evenly divided among the selected number of LEDs.

Single LED mode—Upon detecting an A/D value representing 2.5 V on the VEN pin, Single LED mode will toggle the LED as duty cycle on within a period of 1 s where each 1% of RSOC is a 7.8125-ms high time. So, for example, 10% RSOC or SOH will have the LED on for 78.1 ms and off for 921.9 ms. 90% RSOC or SOH will have the LED on for 703.125 ms and off for 296.875 ms. Any value > 90% will display as 90%.

Four-LED mode—Upon detecting an A/D value representing 2.5 V on the VEN pin, Four-LED mode will display the RSOC or SOH by driving pins RC2(LED1), RC0(LED2), RA1(LED3),RA2(LED4) in a proportional manner where each LED represents 25% of the remaining state-of-charge. For example, if RSOC or SOH = 67%, three LEDs will be illuminated.

External LED mode—Upon detecting an A/D value representing 2.5 V on the VEN pin, External LED mode will transmit the RSOC into an SN74HC164 (for 2–8 LEDs) or two SN74HC164 devices (for 9–16 LEDs) using a bit-banged approach with RC2 as Clock and RC0 as Data (see Figure 8-4). LEDs will be lit for a number of seconds as defined in a data flash parameter. Refer to the SN54HC164, SN74HC164 8-Bit Parallel-Out Serial Shift Registers Data Sheet (SCLS115E) for details on these devices.

Extended commands are available to turn the LEDs on and off for test purposes.