JAJSK07C july   2012  – november 2020 TL1431-SP

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 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 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
      1. 8.4.1 Open Loop (Comparator)
      2. 8.4.2 Closed Loop
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Programming Output/Cathode Voltage
      4. 9.2.4 Total Accuracy
      5. 9.2.5 Stability
      6. 9.2.6 Start-up Time
      7. 9.2.7 Application Curve
      8. 9.2.8 System Examples
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 ドキュメントの更新通知を受け取る方法
    3. 12.3 サポート・リソース
    4. 12.4 Trademarks
    5. 12.5 静電気放電に関する注意事項
    6. 12.6 用語集
  14. 13Mechanical, 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

9.2.8 System Examples

Table 9-2 lists example circuits of the TL1431.

Table 9-2 Table of Example Circuits
APPLICATIONFIGURE
Shunt regulatorFigure 9-3
Single-supply comparator with temperature-compensated thresholdFigure 9-4
Precision high-current series regulatorFigure 9-5
Output control of a three-terminal fixed regulatorFigure 9-6
Higher-current shunt regulatorFigure 9-7
CrowbarFigure 9-8
Precision 5-V, 1.5-A, 0.5% regulatorFigure 9-9
5-V precision regulatorFigure 9-10
PWM converter with 0.5% referenceFigure 9-11
Voltage monitorFigure 9-12
Delay timerFigure 9-13
Precision current limiterFigure 9-14
Precision constant-current sinkFigure 9-15
GUID-65E729A5-629A-4773-BA74-DA8684931002-low.gif
R must provide cathode current ≥1 mA to the TL1431 at minimum V(BATT).
Figure 9-3 Shunt Regulator
GUID-AF6CA806-A320-4977-A71B-536B64E31001-low.gif
R must provide cathode current ≥1 mA to the TL1431 at minimum V(BATT).
Figure 9-5 Precision High-Current Series Regulator
GUID-7B01A1C5-D86D-4E6F-B338-231E1D4BB6BE-low.gifFigure 9-7 Higher-Current Shunt Regulator
GUID-07294D5A-A12D-4382-8659-2E8DAE9A434E-low.gifFigure 9-9 Precision 5-V, 1.5-A, 0.5% Regulator
GUID-7C24602B-5A3C-4BA2-ADC0-4B82491C0AF8-low.gifFigure 9-11 PWM Converter With 0.5% Reference
GUID-8A5213CB-CB57-48BC-982E-2E4292ECAE02-low.gifFigure 9-13 Delay Timer
GUID-3EA14588-BFA9-43C9-81D2-959BDBC62C39-low.gifFigure 9-15 Precision Constant-Current Sink
GUID-AC129FD8-5840-4FB3-8FE0-CAAFD073AA52-low.gifFigure 9-4 Single-Supply Comparator With Temperature-Compensated Threshold
GUID-36E6DAEB-0EE3-4351-933F-9FCD9F9F63FA-low.gifFigure 9-6 Output Control of a Three-Terminal Fixed Regulator
GUID-19992A56-F561-4BA2-9778-AE21C914B3D2-low.gif
See the stability boundary conditions in Figure 6-16 to determine allowable values for C.
Figure 9-8 Crowbar
GUID-514BCC53-462C-4841-9561-4EC468BD6EB1-low.gif
Rb must provide cathode current ≥1 mA to the TL1431.
Figure 9-10 5-V Precision Regulator
GUID-28140574-6C01-4DAF-80A4-6E98A51F950F-low.gif
Select R3 and R4 to provide the desired LED intensity and cathode current ≥1 mA to the TL1431.
Figure 9-12 Voltage Monitor
GUID-08BC3BD3-6E27-4D6E-ACC8-83031D85FCE7-low.gifFigure 9-14 Precision Current Limiter