SLUSBU9H March   2014  – June 2021 BQ2970 , BQ2971 , BQ2972 , BQ2973

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1. 6.1 Pin Descriptions
      1. 6.1.1 Supply Input: BAT
      2. 6.1.2 Cell Negative Connection: VSS
      3. 6.1.3 Voltage Sense Node: V–
      4. 6.1.4 Discharge FET Gate Drive Output: DOUT
      5. 6.1.5 Charge FET Gate Drive Output: COUT
  7. 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 DC Characteristics
    6. 7.6 Programmable Fault Detection Thresholds
    7. 7.7 Programmable Fault Detection Timer Ranges
    8. 7.8 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Timing Charts
    2. 8.2 Test Circuits
    3. 8.3 Test Circuit Diagrams
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
      1. 9.4.1 Normal Operation
      2. 9.4.2 Overcharge Status
      3. 9.4.3 Over-Discharge Status
      4. 9.4.4 Discharge Overcurrent Status (Discharge Overcurrent, Load Short-Circuit)
      5. 9.4.5 Charge Overcurrent Status
      6. 9.4.6 0-V Charging Function Enabled
      7. 9.4.7 0-V Charging Inhibit Function
      8. 9.4.8 Delay Circuit
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Performance Plots
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Related Documentation
    2. 13.2 Support Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

7.6 Programmable Fault Detection Thresholds

PARAMETERCONDITIONMINTYPMAXUNIT
VOVPOvercharge detection voltageFactory Device Configuration: 3.85 V to 4.60 V in 50-mV stepsTA = 25°C–1010mV
TA = 0°C to 60°C–2020mV
VOVP–HysOvercharge release hysteresis voltage100 mV and (VSS – V–) > OCC (min) for release, TA = 25°C–2020mV
VUVPOver-discharge detection voltageFactory Device Configuration: 2.00 V to 2.80 V in 50-mV steps, TA = 25°C–5050mV
VUVP+HysOver-discharge release hysteresis voltage100 mV and (BAT – V–) > 1 V for release, TA = 25°C–5050mV
VOCDDischarging overcurrent detection voltageFactory Device Configuration: 90 mV to 200 mV in 5-mV stepsTA = 25°C–1010mV
TA = –40°C to 85°C–1515mV
Release of VOCDRelease of discharging overcurrent detection voltageRelease when BAT – V– > 1 V1V
VOCCCharging overcurrent detection voltageFactory Device Configuration: –45 mV to –155 mV in 5-mV stepsTA = 25°C–1010mV
TA = –40°C to 85°C–1515mV
Release of VOCCRelease of overcurrent detection voltageRelease when VSS – V– ≥ OCC (min)40mV
VSCCShort Circuit detection voltageFactory Device Configuration: 300 mV, 400 mV, 500 mV, 600 mVTA = 25°C–100100mV
VSCCRRelease of Short Circuit detection voltageRelease when BAT – V– ≥ 1 V1V