JAJSPK3G May   2001  – December 2022 BQ2057C

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 Revision History
  5. 5 概要 (続き)
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Current-Sense Input
      2. 9.3.2 Battery-Voltage Input
      3. 9.3.3 Temperature Sense Input
      4. 9.3.4 Charge-status Output
      5. 9.3.5 Charge-Control Output
      6. 9.3.6 Charge-Rate Compensation Input
      7. 9.3.7 Supply Voltage Input
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1  Functional Description
      2. 10.1.2  Qualification and Precharge
      3. 10.1.3  Current Regulation Phase
      4. 10.1.4  Voltage Regulation Phase
      5. 10.1.5  Charge Termination and Recharge
      6. 10.1.6  Battery Temperature Monitoring
      7. 10.1.7  Charge Inhibit Function
      8. 10.1.8  Charge Status Indication
      9. 10.1.9  Low-power Sleep Mode
      10. 10.1.10 Selecting an External Pass-Transistor
      11. 10.1.11 Selecting Input Capacitor
      12. 10.1.12 Selecting Output Capacitor
      13. 10.1.13 Automatic Charge-rate Compensation
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Power FET
      2. 12.1.2 Current Sense
      3. 12.1.3 Voltage Sense
      4. 12.1.4 Enable (TS)
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 サード・パーティ製品に関する免責事項
    2. 13.2 ドキュメントの更新通知を受け取る方法
    3. 13.3 サポート・リソース
    4. 13.4 Trademarks
    5. 13.5 静電気放電に関する注意事項
    6. 13.6 用語集
  14. 14Mechanical, Packaging, and Orderable Information

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ（パッケージ｜ピン）
  • D|8
  • DGK|8
  • PW|8
サーマルパッド・メカニカル・データ
発注情報

10.1.1 Functional Description

The BQ2057 is an advanced linear charge controller for single or two-cell Li-Ion or Li-Pol applications. Figure 10-1 shows the schematic of charger using a PNP pass transistor. Figure 10-2 is an operational state diagram, and Figure 10-3 is a typical charge profile. Figure 10-4 shows the schematic of a charger using P-channel MOSFET.

GUID-20220527-SS0I-77B3-MFMP-CDF7GBXSJDXL-low.gif Figure 10-1 Low Dropout Single- or Two-Cell Li-Ion/Li-Pol Charger
GUID-20220527-SS0I-JQLB-7PTN-K1BSLBNR8Z59-low.gif Figure 10-2 Operation Flowchart
GUID-20220527-SS0I-LXTZ-CLML-9SMZ2HWFQNJ0-low.gif Figure 10-3 Typical Charge Profile