SLUSBU5U November   2013  – October 2024 BQ2961 , BQ2962

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
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Pin Details
        1. 7.3.1.1 Input Sense Voltage, Vx
        2. 7.3.1.2 Output Drive, OUT
        3. 7.3.1.3 Supply Input, VDD
        4. 7.3.1.4 Regulated Supply Output, REG
      2. 7.3.2 Overvoltage Sensing for OUT
      3. 7.3.3 Regulated Output Voltage and REG_EN Pin
    4. 7.4 Device Functional Modes
      1. 7.4.1 NORMAL Mode
      2. 7.4.2 OVERVOLTAGE Mode
      3. 7.4.3 UNDERVOLTAGE Mode
      4. 7.4.4 CUSTOMER TEST 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 Curves
  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 Third-Party Products Disclaimer
    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
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.3 Regulated Output Voltage and REG_EN Pin

For BQ2961, there are three factory-preprogrammed options for the regulated output voltage, 3.3 V, 2.5 V, and 1.8 V. For BQ2962, the regulated output voltage options are 3.3 V, 3.15 V, and 3.0 V. Potentially, the BQ2962xy device can provide other regulated voltage output between 3.3 V to 3.0 V. Contact Texas Instruments for details.

At power up, the regulated output is on by default. If any cell voltage is below VUVREG at device power up, the regulated output will remain on until the tUV_DELAY time has passed, the regulated output turns off after the delay time.

During discharge, if any cell voltage falls below the VUVREG threshold for tUV_DELAY time, the regulated output is self-disabled. The regulated output turns on again when all the cell voltages are above VUVREG + VUVHYS.

BQ2961 BQ2962 REG Output TimingFigure 7-2 REG Output Timing