SLVS139Z July   1996  – June 2024 TLV431 , TLV431A , TLV431B

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics for TLV431
    6. 5.6 Electrical Characteristics for TLV431A
    7. 5.7 Electrical Characteristics for TLV431B
    8. 5.8 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Open Loop (Comparator)
      2. 7.4.2 Closed Loop
  9. 8 Applications and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Comparator with Integrated Reference (Open Loop)
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Basic Operation
          2. 8.2.1.2.2 Overdrive
          3. 8.2.1.2.3 Output Voltage and Logic Input Level
            1. 8.2.1.2.3.1 Input Resistance
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Shunt Regulator/Reference
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Programming Output/Cathode Voltage
          2. 8.2.2.2.2 Total Accuracy
          3. 8.2.2.2.3 Stability
        3. 8.2.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DBZ|3
  • DBV|5
  • PK|3
  • LP|3
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.8 Typical Characteristics

Operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions table are not implied.

TLV431 TLV431A TLV431B Reference Voltage vs Junction TemperatureFigure 5-1 Reference Voltage vs Junction Temperature
TLV431 TLV431A TLV431B Reference Input Current vs Junction Temperature (for TLV431B)Figure 5-3 Reference Input Current vs Junction Temperature (for TLV431B)
TLV431 TLV431A TLV431B Minimum Cathode Current vs TemperatureFigure 5-5 Minimum Cathode Current vs Temperature
TLV431 TLV431A TLV431B Off-State Cathode Current vs Junction Temperature (for TLV431 and TLV431A)Figure 5-7 Off-State Cathode Current vs Junction Temperature (for TLV431 and TLV431A)
TLV431 TLV431A TLV431B Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Junction Temperature (for TLV431 and TLV431A)Figure 5-9 Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Junction Temperature (for TLV431 and TLV431A)

‡Extrapolated from Life-test Data Taken at 125°C; the Activation Energy Assumed Is 0.7 eV.

TLV431 TLV431A TLV431B Percentage Change in vREF vs Operating Life at 55°CFigure 5-11 Percentage Change in vREF vs Operating Life at 55°C
TLV431 TLV431A TLV431B Reference Input Current vs Junction Temperature (for TLV431 and TLV431A)Figure 5-2 Reference Input Current vs Junction Temperature (for TLV431 and TLV431A)
TLV431 TLV431A TLV431B Cathode Current vs Cathode VoltageFigure 5-4 Cathode Current vs Cathode Voltage
TLV431 TLV431A TLV431B Cathode Current vs Cathode VoltageFigure 5-6 Cathode Current vs Cathode Voltage
TLV431 TLV431A TLV431B Off-State Cathode Current vs Junction Temperature (for TLV431B)Figure 5-8 Off-State Cathode Current vs Junction Temperature (for TLV431B)
TLV431 TLV431A TLV431B Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Junction Temperature (for TLV431B)Figure 5-10 Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Junction Temperature (for TLV431B)
TLV431 TLV431A TLV431B Equivalent Input Noise VoltageFigure 5-12 Equivalent Input Noise Voltage
TLV431 TLV431A TLV431B Equivalent Noise Voltage over a 10S PeriodFigure 5-13 Equivalent Noise Voltage over a 10S Period
TLV431 TLV431A TLV431B Voltage Gain and Phase MarginFigure 5-14 Voltage Gain and Phase Margin
TLV431 TLV431A TLV431B Reference Impedance vs FrequencyFigure 5-15 Reference Impedance vs Frequency
TLV431 TLV431A TLV431B Pulse Response 1Figure 5-16 Pulse Response 1
TLV431 TLV431A TLV431B Pulse Response 2Figure 5-17 Pulse Response 2
TLV431 TLV431A TLV431B Stability Boundary Conditions
‡The areas under the curves represent conditions that can cause the device to oscillate. For VKA = 2V and 3V curves, R2 and Vbat were adjusted to establish the initial VKA and IK conditions with CL = 0. Vbat and CL then were adjusted to determine the ranges of stability.
Figure 5-18 Stability Boundary Conditions
TLV431 TLV431A TLV431B Phase Margin vs Capacitive Load vKA = VREF (1.25V), TA= 25°CFigure 5-19 Phase Margin vs Capacitive Load vKA = VREF (1.25V), TA= 25°C
TLV431 TLV431A TLV431B Phase Margin vs Capacitive Load vKA = 2.50V, TA= 25°CFigure 5-20 Phase Margin vs Capacitive Load vKA = 2.50V, TA= 25°C
TLV431 TLV431A TLV431B Phase Margin vs Capacitive Load vKA = 5.00V, TA= 25°CFigure 5-21 Phase Margin vs Capacitive Load vKA = 5.00V, TA= 25°C