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  • TL431, TL432 Precision Programmable Reference

    • SLVS543S August   2004  – May 2024 TL431 , TL432

      PRODUCTION DATA  

  • CONTENTS
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  • TL431, TL432 Precision Programmable Reference
  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  Thermal Information
    4. 6.4  Recommended Operating Conditions
    5. 6.5  Electrical Characteristics, TL431C, TL432C
    6. 6.6  Electrical Characteristics, TL431I, TL432I
    7. 6.7  Electrical Characteristics, TL431Q, TL432Q
    8. 6.8  Electrical Characteristics, TL431AC, TL432AC
    9. 6.9  Electrical Characteristics, TL431AI, TL432AI
    10. 6.10 Electrical Characteristics, TL431AQ, TL432AQ
    11. 6.11 Electrical Characteristics, TL431BC, TL432BC
    12. 6.12 Electrical Characteristics, TL431BI, TL432BI
    13. 6.13 Electrical Characteristics, TL431BQ, TL432BQ
    14. 6.14 Typical Characteristics
  8. 7 Parameter Measurement Information
    1. 7.1 Temperature Coefficient
    2. 7.2 Dynamic Impedance
  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 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Comparator With Integrated Reference
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Basic Operation
            1. 9.2.1.2.1.1 Overdrive
          2. 9.2.1.2.2 Output Voltage and Logic Input Level
            1. 9.2.1.2.2.1 Input Resistance
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Shunt Regulator/Reference
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Programming Output/Cathode Voltage
          2. 9.2.2.2.2 Total Accuracy
          3. 9.2.2.2.3 Stability
          4. 9.2.2.2.4 Start-Up Time
        3. 9.2.2.3 Application Curve
    3. 9.3 System Examples
    4. 9.4 Power Supply Recommendations
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Nomenclature
    2. 10.2 Related Links
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
  14. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • D|8
    • MSOI002K
  • PW|8
    • MPDS568
  • PK|3
    • MHSI001B
  • LP|3
    • MSOT002D
  • PS|8
    • MSOP001A
  • DCK|6
    • MPDS114F
  • DBV|5
    • MPDS018T
  • P|8
    • MPDI001B
  • DBZ|3
    • MPDS108G
Thermal pad, mechanical data (Package|Pins)
  • PK|3
    • PPTD070
  • PS|8
    • QFND376
Orderable Information
  • slvs543s_oa
  • slvs543s_pm
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Data Sheet

TL431, TL432 Precision Programmable Reference

1 Features

  • Reference voltage tolerance at 25°C
    • 0.5% (B grade)
    • 1% (A grade)
    • 2% (Standard grade)
  • Adjustable output voltage: Vref to 36V
  • Operation from −40°C to 125°C
  • Typical temperature drift (TL43xB)
    • 6mV (C temp)
    • 14mV (I temp, Q temp)
  • Low Output Noise
  • 0.2Ω Typical output impedance
  • Sink-current capability: 1mA to 100mA

2 Applications

  • Rack server power
  • Industrial AC/DC
  • AC inverter & VF drives
  • Servo drive control module
  • Notebook PC power adapter design
TL431 TL432 Simplified SchematicSimplified Schematic

 
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