SLUSCS3J October   2017  – December 2022 BQ2980 , BQ2982

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
  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 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
      1. 8.1.1 Device Configurability
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Overvoltage (OV) Status
      2. 8.3.2 Undervoltage (UV) Status
      3. 8.3.3 Overcurrent in Charge (OCC) Status
      4. 8.3.4 Overcurrent in Discharge (OCD) and Short Circuit in Discharge (SCD) Status
      5. 8.3.5 Overtemperature (OT) Status
      6. 8.3.6 Charge and Discharge Driver
      7. 8.3.7 CTR for FET Override and Device Shutdown
      8. 8.3.8 CTR for PTC Connection
      9. 8.3.9 ZVCHG (0-V Charging)
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power Modes
        1. 8.4.1.1 Power-On-Reset (POR)
        2. 8.4.1.2 NORMAL Mode
        3. 8.4.1.3 FAULT Mode
        4. 8.4.1.4 SHUTDOWN Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Test Circuits for Device Evaluation
      2. 9.1.2 Test Circuit Diagrams
      3. 9.1.3 Using CTR as FET Driver On/Off Control
    2. 9.2 Typical Applications
      1. 9.2.1 BQ298x Configuration 1: System-Controlled Reset/Shutdown Function
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Selection of Power FET
        4. 9.2.1.4 Application Curves
      2. 9.2.2 BQ298x Configuration 2: CTR Function Disabled
      3. 9.2.3 BQ298x Configuration 3: PTC Thermistor Protection
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 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
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.1.1 Design Requirements

For this design example, use the parameters listed Table 9-1.

Table 9-1 Recommended Component Selection
PARAMETERTYPMAXUNITCOMMENT
RPACKPACK resistor—2kΩThis resistor is used to protect the PACK pin from a reserve charging current condition.
RVDDVDD filter resistor—300Ω
CVDDVDD filter capacitor0.11µF
RBATBAT resistor (for safety. To limit current if BAT pin is shorted internally)20—ΩThis resistor limits current if the BAT pin is shorted to ground internally. BAT is used for voltage measurement for OV and UV. A larger resistor value can impact the voltage measurement accuracy.
RCTRCTR resistor (optional for ESD)100—ΩThis is optional for ESD protection and is highly dependent on the PCB layout.