SLUSFM5 March   2025 BQ76907-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  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 BQ76907-Q1
    5. 6.5  Supply Current
    6. 6.6  Digital I/O
    7. 6.7  REGOUT LDO
    8. 6.8  Voltage References
    9. 6.9  Coulomb Counter
    10. 6.10 Coulomb Counter Digital Filter
    11. 6.11 Current Wake Detector
    12. 6.12 Analog-to-Digital Converter
    13. 6.13 Cell Voltage Measurement Accuracy
    14. 6.14 Cell Balancing
    15. 6.15 Internal Temperature Sensor
    16. 6.16 Thermistor Measurement
    17. 6.17 Hardware Overtemperature Detector
    18. 6.18 Internal Oscillator
    19. 6.19 Charge and Discharge FET Drivers
    20. 6.20 Comparator-Based Protection Subsystem
    21. 6.21 Timing Requirements - I2C Interface, 100kHz Mode
    22. 6.22 Timing Requirements - I2C Interface, 400kHz Mode
    23. 6.23 Timing Diagram
    24. 6.24 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Configuration
      1. 7.3.1 Commands and Subcommands
      2. 7.3.2 Configuration Using OTP or Registers
      3. 7.3.3 Device Security
    4. 7.4 Device Hardware Features
      1. 7.4.1  Voltage ADC
      2. 7.4.2  Coulomb Counter and Digital Filters
      3. 7.4.3  Protection FET Drivers
      4. 7.4.4  Voltage References
      5. 7.4.5  Multiplexer
      6. 7.4.6  LDOs
      7. 7.4.7  Standalone Versus Host Interface
      8. 7.4.8  ALERT Pin Operation
      9. 7.4.9  Low Frequency Oscillator
      10. 7.4.10 I2C Serial Communications Interface
    5. 7.5 Measurement Subsystem
      1. 7.5.1 Voltage Measurement
        1. 7.5.1.1 Voltage ADC Scheduling
        2. 7.5.1.2 Unused VC Pins
        3. 7.5.1.3 General Purpose ADCIN Functionality
      2. 7.5.2 Current Measurement and Charge Integration
      3. 7.5.3 Internal Temperature Measurement
      4. 7.5.4 Thermistor Temperature Measurement
      5. 7.5.5 Factory Trim and Calibration
    6. 7.6 Protection Subsystem
      1. 7.6.1 Protections Overview
      2. 7.6.2 Primary Protections
      3. 7.6.3 CHG Detector
      4. 7.6.4 Cell Open-Wire Protection
      5. 7.6.5 Diagnostic Checks
    7. 7.7 Cell Balancing
    8. 7.8 Device Operational Modes
      1. 7.8.1 Overview of Operational Modes
      2. 7.8.2 NORMAL Mode
      3. 7.8.3 SLEEP Mode
      4. 7.8.4 DEEPSLEEP Mode
      5. 7.8.5 SHUTDOWN Mode
      6. 7.8.6 CONFIG_UPDATE Mode
  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
      3. 8.2.3 Application Performance Plot
      4. 8.2.4 Random Cell Connection Support
      5. 8.2.5 Startup Timing
      6. 8.2.6 FET Driver Turn-Off
      7. 8.2.7 Usage of Unused Pins
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

6.20 Comparator-Based Protection Subsystem

Typical values stated where TA = 25°C and VBAT = 25.9V, min/max values stated where TA = -40°C to 125°C and VBAT = 3V to 38.5V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V(SCD) Short circuit in discharge voltage threshold range Nominal settings, threshold based on VSRP – VSRN –10,
–20,
–40,
–60,
–80,
–100,
–125,
–150,
–175,
–200,
–250,
–300,
–350,
–400,
–450,
–500		 mV
V(SCD_ACC) Short circuit in discharge voltage threshold detection accuracy (2) –10mV setting –43.3 39.8 % of nominal threshold
–20mV setting –22.6 19 % of nominal threshold
–40mV setting –14.2 9.7 % of nominal threshold
Settings –60mV –12.0 7.0 % of nominal threshold
Settings –80mV –9.6 5.8 % of nominal threshold
Settings –100mV to -500mV –9.1 5.4 % of nominal threshold
V(SCD_DLY) Short circuit in discharge detection delay(1) Fastest setting (with 3mV overdrive) 8 µs
Fastest setting (with 25mV overdrive) 0.6 µs
Setting for 15µs (with 3mV overdrive) 20 28 µs
Setting for 15µs (with 25mV overdrive) 20 µs
Settings for 31µs (with 25mV overdrive) 14 35 µs
Settings for 61µs (with 25mV overdrive) 42 66 µs
Settings for 122µs (with 25mV overdrive) 102 130 µs
Settings for 244µs (with 25mV overdrive) 218 258 µs
Settings for 488µs (with 25mV overdrive) 452 510 µs
Settings for 977µs (with 25mV overdrive) 920 1018 µs
Settings for 1953µs (with 25mV overdrive) 1860 2034 µs
Settings for 3906µs (with 25mV overdrive) 3735 4065 µs
Setting for 7797µs (with 25mV overdrive) 7470 8112 µs
V(OCC) Overcurrent in charge (OCC) voltage threshold range Nominal settings, threshold based on VSRP – VSRN 3mV to 19mV in 2mV steps, 22mV to 124mV in 2mV steps mV
V(OCC_ACC) Overcurrent in charge (OCC) voltage threshold accuracy (2) Settings 3mV to 19mV –1.45 1.81 mV
V(OCC_ACC) Overcurrent in charge (OCC) voltage threshold accuracy (2) Settings 22mV to 80mV -3.02 2.95 mV
V(OCC_ACC) Overcurrent in charge (OCC) voltage threshold accuracy (2) Settings 82mV to 124mV -4.05 5.26 mV
V(OCD) Overcurrent in discharge (OCD1, OCD2) voltage threshold ranges Nominal settings, thresholds based on VSRP – VSRN –4mV to –200mV in 2mV steps mV
V(OCD_ACC) Overcurrent (OCD1, OCD2) detection voltage threshold accuracy (2) Settings -4mV –1.76 1.4 mV
Settings  -6mV to -16mV –1.45 1.0 mV
Settings -18mV to -166mV –3.34 3.27 mV
Settings -168mV to -200mV –3.98 4,38 mV
V(OC_DLY) Overcurrent (OCC, OCD1, OCD2) detection delay (independent delay setting for each protection) Fastest setting 0.46 ms
Nominal settings, low range 1.22ms to 20.435ms in 0.305ms steps ms
Nominal settings, medium low range 22.875ms to 176.595ms in 2.441ms steps ms
Nominal settings, medium high range 181.475ms to 488.915ms in 4.883ms steps ms
Nominal settings, high range 498.675ms to 1103.795ms in 9.766ms steps ms
V(OC_DLY) Overcurrent (OCC, OCD1, OCD2) detection delay accuracy(1) Fastest setting -0.35 0.35 ms
Nominal settings, low range -1.2 0.90 ms
Nominal settings, medium low range -7.5 7.2 ms
Nominal settings, medium high range -20 20 ms
Nominal settings, high range -45 45 ms
(1) Specified by design
(2) Specified by a combination of characterization and production test