JAJSSH0 December   2023 BQ77307

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  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 BQ77307
    5. 6.5  Supply Current
    6. 6.6  Digital I/O
    7. 6.7  REGOUT LDO
    8. 6.8  Voltage References
    9. 6.9  Current Detector
    10. 6.10 Thermistor Pullup Resistor
    11. 6.11 Hardware Overtemperature Detector
    12. 6.12 Internal Oscillator
    13. 6.13 Charge and Discharge FET Drivers
    14. 6.14 Protection Subsystem
    15. 6.15 Timing Requirements - I2C Interface, 100kHz Mode
    16. 6.16 Timing Requirements - I2C Interface, 400kHz Mode
    17. 6.17 Timing Diagram
    18. 6.18 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 Protection Subsystem
      2. 7.4.2  Current Protection Subsystem
      3. 7.4.3  Unused VC Pins
      4. 7.4.4  Internal Temperature Protection
      5. 7.4.5  Thermistor Temperature Protections
      6. 7.4.6  Protection FET Drivers
      7. 7.4.7  Voltage References
      8. 7.4.8  Multiplexer
      9. 7.4.9  LDOs
      10. 7.4.10 Standalone Versus Host Interface
      11. 7.4.11 ALERT Pin Operation
      12. 7.4.12 Low Frequency Oscillator
      13. 7.4.13 I2C Serial Communications Interface
    5. 7.5 Protection Subsystem
      1. 7.5.1 Protections Overview
      2. 7.5.2 Primary Protections
      3. 7.5.3 Cell Open Wire Protection
      4. 7.5.4 Diagnostic Checks
    6. 7.6 Device Power Modes
      1. 7.6.1 Overview of Power Modes
      2. 7.6.2 NORMAL Mode
      3. 7.6.3 SHUTDOWN Mode
      4. 7.6.4 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
  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 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 ドキュメントの更新通知を受け取る方法
    3. 11.3 サポート・リソース
    4. 11.4 Trademarks
    5. 11.5 静電気放電に関する注意事項
    6. 11.6 用語集
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

6.14 Protection Subsystem

Typical values stated where TA = 25°C and VBAT = 25.9 V, min/max values stated where TA = -40°C to 110°C and VBAT = 3 V to 38.5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V(CV_ACC) Cell overvoltage (COV) and cell undervoltage (CUV) protection threshold voltage accuracy (2) 0 V < VVC(x) - VVC(x-1) < 4.5 V, TA = 25°C, 1 ≤ x ≤ 7, using an input network of 10-Ω and 220 nF  –4 4 mV
0 V < VVC(x) - VVC(x-1) < 4.5 V, TA = –20°C to 65°C, 1 ≤ x ≤ 7, using an input network of 10-Ω and 220 nF  –8 7 mV
0 V < VVC(x) - VVC(x-1) < 4.5 V, TA = –40°C to 110°C, 1 ≤ x ≤ 7, using an input network of 10-Ω and 220 nF  –10 10 mV
0 V < VVC(x) - VVC(x-1) < 5.5 V, TA = –40°C to 110°C, 1 ≤ x ≤ 7, using an input network of 10-Ω and 220 nF  –13 12 mV
V(CV_DLY) Cell overvoltage (COV) and cell undervoltage (CUV) detection delay accuracy (1) Error in delay versus nominal delay setting –5% 5%
V(TS_ACC) Thermistor temperature protection threshold accuracy (2) Error in threshold versus nominal setting, threshold set in terms of VTS / VREG18. –2% 2%
V(TS_DLY) Thermistor temperature protection delay accuracy (2) Error in delay versus nominal setting –5% 5%
V(TINT_ACC) Internal temperature protection threshold accuracy (2) Error in threshold versus nominal setting, TA = –20°C to 65°C –5.8 5.0 ℃
Error in threshold versus nominal setting, TA = –40°C to 110°C –7.8 5.3 ℃
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) –10 mV setting –36% 22%
–20 mV setting –19% 12%
–40 mV setting –14% 6%
Settings –60 mV to –500 mV –11% 6%
V(SCD_DLY) Short circuit in discharge detection delay(1) Fastest setting (with 3 mV overdrive) 8 µs
Fastest setting (with 25 mV overdrive) 0.6 µs
Setting for 15 µs (with 3 mV overdrive) 20 28 µs
Setting for 15 µs (with 25 mV overdrive) 20 µs
Settings for 31 µs (with 25 mV overdrive) 14 35 µs
Settings for 61 µs (with 25 mV overdrive) 42 66 µs
Settings for 122 µs (with 25 mV overdrive) 102 130 µs
Settings for 244 µs (with 25 mV overdrive) 218 258 µs
Settings for 488 µs (with 25 mV overdrive) 452 510 µs
Settings for 977 µs (with 25 mV overdrive) 920 1018 µs
Settings for 1953 µs (with 25 mV overdrive) 1860 2034 µs
Settings for 3906 µs (with 25 mV overdrive) 3735 4065 µs
Setting for 7797 µs (with 25 mV overdrive) 7470 8112 µs
V(OCC) Overcurrent in charge (OCC) voltage threshold range Nominal settings, threshold based on VSRP – VSRN 3 mV to 123 mV in 2 mV steps mV
V(OCC_ACC) Overcurrent in charge (OCC) voltage threshold accuracy (2) Settings 3 mV to 19 mV –1.17 1.32 mV
V(OCC_ACC) Overcurrent in charge (OCC) voltage threshold accuracy (2) Settings 21 mV to 55 mV –1.68 2.99 mV
V(OCC_ACC) Overcurrent in charge (OCC) voltage threshold accuracy (2) Settings 57 mV to 123 mV –1.61 4.10 mV
V(OCD) Overcurrent in discharge (OCD1, OCD2) voltage threshold ranges Nominal settings, thresholds based on VSRP – VSRN –4 mV to –200 mV in 2 mV steps mV
V(OCD_ACC) Overcurrent (OCD1, OCD2) detection voltage threshold accuracy (2) Settings –4 mV to –18 mV –1.23 0.84 mV
Settings  –20 mV to –56 mV –2.84 1.59 mV
Settings –58 mV to –100 mV –2.15 2.58 mV
Settings –102 mV to –200 mV –2,86 4,19 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 1.22 ms to 20.435 ms in 0.305 ms steps ms
Nominal settings, medium low range 22.875 ms to 176.595 ms in 2.441 ms steps ms
Nominal settings, medium high range 181.475 ms to 488.915 ms in 4.883 ms steps ms
Nominal settings, high range 498.675 ms to 1103.795 ms in 9.766 ms 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