SLVS555L November   2004  – April 2020 TLVH431 , TLVH431A , TLVH431B , TLVH432 , TLVH432A , TLVH432B

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Simplified Schematic
  4. Revision History
  5. Pin Configuration and Functions
    1.     Pin Functions
  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 TLVH43x Electrical Characteristics
    6. 6.6 TLVH43xA Electrical Characteristics
    7. 6.7 TLVH43xB Electrical Characteristics
    8. 6.8 Typical Characteristics
  7. Parameter Measurement Information
  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
  9. Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Comparator With Integrated Reference (Open Loop)
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Basic Operation
          2. 9.2.1.2.2 Overdrive
          3. 9.2.1.2.3 Output Voltage and Logic Input Level
            1. 9.2.1.2.3.1 Input Resistance
        3. 9.2.1.3 Application Curves
      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
        3. 9.2.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Related Links
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

TLVH43xB Electrical Characteristics

at 25°C free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS TLVH431B
TLVH432B
UNIT
MIN TYP MAX
VREF Reference voltage VKA = VREF,
IK = 10 mA
TA = 25°C 1.234 1.24 1.246 V
TA = full range,
See Figure 18(1)
TLVH431BC 1.227 1.253
TLVH431BI 1.224 1.259
TLVH431BQ 1.221 1.265
VREF(dev) VREF deviation over full temperature range(2) VKA = VREF, IK = 10 mA, See Figure 18(1) TLVH431BC 4 12 mV
TLVH431BI 6 20
TLVH431BQ 11 31
TLVH431 TLVH431A TLVH431B TLVH432 TLVH432A TLVH432B dvref_dvka_lvs555.gif Ratio of VREF change to
cathode voltage change
IK = 10 mA, VK = VREF to 18 V, See Figure 19 –1.5 –2.7 mV/V
Iref Reference terminal current IK = 10 mA, R1 = 10 kΩ, R2 = open, See Figure 19 0.1 0.5 μA
Iref(dev) Iref deviation over full
temperature range(2)
IK = 10 mA, R1 = 10 kΩ, R2 = open,
See Figure 19(1)
TLVH431BC 0.05 0.3 μA
TLVH431BI 0.1 0.4
TLVH431BQ 0.15 0.5
IK(min) Minimum cathode current for regulation VKA = VREF, See Figure 18 60 100 μA
IK(off) Off-state cathode current VREF = 0, VKA = 18 V, See Figure 20 0.02 0.1 μA
|zKA| Dynamic impedance(3) VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 70 mA, See Figure 18 0.25 0.4
Full temperature ranges are –40°C to +125°C for TLVH431Q, –40°C to +85°C for TLVH431I, and 0°C to 70°C for TLVH431C.
The deviation parameters VREF(dev) and Iref(dev) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. The average full-range temperature coefficient of the reference input voltage, αVREF, is defined as:
TLVH431 TLVH431A TLVH431B TLVH432 TLVH432A TLVH432B EQ_note2_lvs139.gif
where ΔTA is the rated operating free-air temperature range of the device.
αVREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at the lower temperature.
The dynamic impedance is defined as:
TLVH431 TLVH431A TLVH431B TLVH432 TLVH432A TLVH432B Inline_note3_lvs139.gif
When the device is operating with two external resistors (see Figure 19), the total dynamic impedance of the circuit is defined as:
TLVH431 TLVH431A TLVH431B TLVH432 TLVH432A TLVH432B Inline3a_lvs139.gif