SLVS905B December   2008  – July 2024 TLV431A-Q1 , TLV431B-Q1

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Pin Configuration and Functions
    1.     Pin Functions
  6. Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Thermal Information
    4. 5.4 Recommended Operating Conditions
    5. 5.5 Electrical Characteristics for TLV431A-Q1
    6. 5.6 Electrical Characteristics for TLV431B-Q1
    7. 5.7 Typical Characteristics
  7. Parameter Measurement Information
  8. 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. 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. Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, 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

Typical Characteristics

Operation of the device at these or any other conditions beyond those indicated in the Section 5.4 table are not implied.

TLV431A-Q1 TLV431B-Q1 Reference Voltage vs  Junction TemperatureFigure 5-1 Reference Voltage vs Junction Temperature
TLV431A-Q1 TLV431B-Q1 Reference Input Current vs  Junction Temperature (for TLV431B)Figure 5-3 Reference Input Current vs Junction Temperature (for TLV431B)
TLV431A-Q1 TLV431B-Q1 Minimum Cathode Current (µA) vs TemperatureFigure 5-5 Minimum Cathode Current (µA) vs Temperature
TLV431A-Q1 TLV431B-Q1 Off-State Cathode Current vs  Junction Temperature for TLV431AFigure 5-7 Off-State Cathode Current vs Junction Temperature for TLV431A
TLV431A-Q1 TLV431B-Q1 Ratio of Delta Reference Voltage to Delta Cathode Voltage vs  Junction Temperature for TLV431AFigure 5-9 Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Junction Temperature for TLV431A
TLV431A-Q1 TLV431B-Q1 Percentage Change in VREF vs  Operating Life at 55°C
Extrapolated from life-test data taken at 125°C; the activation energy assumed is 0.7 eV.
Figure 5-11 Percentage Change in VREF vs Operating Life at 55°C
TLV431A-Q1 TLV431B-Q1 Reference Current vs  Free- air Temperature (TLV431A)Figure 5-2 Reference Current vs Free- air Temperature (TLV431A)
TLV431A-Q1 TLV431B-Q1 Cathode Current vs  Cathode VoltageFigure 5-4 Cathode Current vs Cathode Voltage
TLV431A-Q1 TLV431B-Q1 Cathode Current vs  Cathode VoltageFigure 5-6 Cathode Current vs Cathode Voltage
TLV431A-Q1 TLV431B-Q1 Off-State Cathode Current vs  Junction Temperature for TLV431BFigure 5-8 Off-State Cathode Current vs Junction Temperature for TLV431B
TLV431A-Q1 TLV431B-Q1 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)
TLV431A-Q1 TLV431B-Q1 Equivalent Input Noise Voltage Figure 5-12 Equivalent Input Noise Voltage
TLV431A-Q1 TLV431B-Q1 Equivalent Noise Voltage over a 10s Period Figure 5-13 Equivalent Noise Voltage over a 10s Period
TLV431A-Q1 TLV431B-Q1 Voltage Gain and Phase Margin Figure 5-14 Voltage Gain and Phase Margin
TLV431A-Q1 TLV431B-Q1 Reference Impedance vs Frequency Figure 5-15 Reference Impedance vs Frequency
TLV431A-Q1 TLV431B-Q1 Pulse
                        Response 1 Figure 5-16 Pulse Response 1
TLV431A-Q1 TLV431B-Q1 Pulse
                        Response 2 Figure 5-17 Pulse Response 2
TLV431A-Q1 TLV431B-Q1 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
TLV431A-Q1 TLV431B-Q1 Phase
                        Margin vs Capacitive Load VKA = VREF (1.25 V),
                            TA= 25°C (For TLV431B-Q1) Figure 5-19 Phase Margin vs Capacitive Load VKA = VREF (1.25 V), TA= 25°C (For TLV431B-Q1)
TLV431A-Q1 TLV431B-Q1 Phase
                        Margin vs Capacitive Load VKA = 2.50V, TA= 25°C (For
                        TLV431B-Q1) Figure 5-20 Phase Margin vs Capacitive Load VKA = 2.50V, TA= 25°C (For TLV431B-Q1)
TLV431A-Q1 TLV431B-Q1 Phase
                        Margin vs Capacitive Load VKA = 5.00V, TA= 25°C (For
                        TLV431B-Q1) Figure 5-21 Phase Margin vs Capacitive Load VKA = 5.00V, TA= 25°C (For TLV431B-Q1)