SLVS543Q August   2004  – July 2022 TL431 , TL432

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Thermal Information
    4. 7.4  Recommended Operating Conditions
    5. 7.5  Electrical Characteristics, TL431C, TL432C
    6. 7.6  Electrical Characteristics, TL431I, TL432I
    7. 7.7  Electrical Characteristics, TL431Q, TL432Q
    8. 7.8  Electrical Characteristics, TL431AC, TL432AC
    9. 7.9  Electrical Characteristics, TL431AI, TL432AI
    10. 7.10 Electrical Characteristics, TL431AQ, TL432AQ
    11. 7.11 Electrical Characteristics, TL431BC, TL432BC
    12. 7.12 Electrical Characteristics, TL431BI, TL432BI
    13. 7.13 Electrical Characteristics, TL431BQ, TL432BQ
    14.     Typical Characteristics
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
      1. 9.4.1 Open Loop (Comparator)
      2. 9.4.2 Closed Loop
  10. 10Applications and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 Comparator With Integrated Reference
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Basic Operation
            1. 10.2.1.2.1.1 Overdrive
          2. 10.2.1.2.2 Output Voltage and Logic Input Level
            1. 10.2.1.2.2.1 Input Resistance
        3. 10.2.1.3 Application Curve
      2. 10.2.2 Shunt Regulator/Reference
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
          1. 10.2.2.2.1 Programming Output/Cathode Voltage
          2. 10.2.2.2.2 Total Accuracy
          3. 10.2.2.2.3 Stability
          4. 10.2.2.2.4 Start-Up Time
        3. 10.2.2.3 Application Curve
    3. 10.3 System Examples
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Nomenclature
    2. 13.2 Related Links
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Support Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

Electrical Characteristics, TL431AC, TL432AC

over recommended operating conditions, TA = 25°C (unless otherwise noted)
PARAMETERTEST CIRCUITTEST CONDITIONSTL431AC, TL432ACUNIT
MINTYPMAX
VrefReference voltageSee Figure 8-1VKA = Vref, IKA = 10 mA247024952520mV
VI(dev)Deviation of reference input voltage over full temperature range(1)See Figure 8-1VKA = Vref,
IKA = 10 mA
SOT23-3 and TL432 devices616mV
All other devices425
ΔVref / ΔVKARatio of change in reference voltage to the change in cathode voltageSee Figure 8-2IKA = 10 mAΔVKA = 10 V – Vref–1.4–2.7mV/V
ΔVKA = 36 V – 10 V–1–2
IrefReference input currentSee Figure 8-2IKA = 10 mA, R1 = 10 kΩ, R2 = ∞24µA
II(dev)Deviation of reference input current over full temperature range(1)See Figure 8-2IKA = 10 mA, R1 = 10 kΩ, R2 = ∞0.81.2µA
IminMinimum cathode current for regulationSee Figure 8-1VKA = Vref0.40.6mA
IoffOff-state cathode currentSee Figure 8-3VKA = 36 V, Vref = 00.10.5µA
|zKA|Dynamic impedance(2)See Figure 8-1VKA = Vref, f ≤ 1 kHz, IKA = 1 mA to 100 mA0.20.5