JAJSLR5E december   2011  – april 2021 BQ2946

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Revision History
  6. 5 Device Options
  7. 6 Pin Configuration and Functions
  8. 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
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Sense Positive Input for V1
      2. 8.3.2 Output Drive, OUT
      3. 8.3.3 Supply Input, VDD
      4. 8.3.4 Thermal Pad, PWRPAD
    4. 8.4 Device Functional Modes
      1. 8.4.1 NORMAL Mode
      2. 8.4.2 OVERVOLTAGE Mode
      3. 8.4.3 Customer Test Mode
  10.   Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Application Configuration
      2. 9.1.2 30
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 System Example
  11.   Power Supply Recommendations
  12. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  13. 10Device and Documentation Support
    1. 10.1 サード・パーティ製品に関する免責事項
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 静電気放電に関する注意事項
    6. 10.6 用語集
  14.   Mechanical, 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

8.3 Feature Description

The method of overvoltage detection is comparing the cell voltage to an OVP threshold voltage VOV. Once the cell voltage exceeds the programmed fixed value VOV, the delay timer circuit is activated. This delay (tDELAY) is fixed for 4 seconds for the BQ294602 device. When these conditions are satisfied, the OUT terminal is transitioned to a high level. This output (OUT) is released to a low condition if the cell input (V1) is below the OVP threshold minus the VHYS.

GUID-91820E27-645C-461B-8970-1E095E554398-low.gifFigure 8-1 Timing for Overvoltage Sensing