SLVSB44C July   2012  – November 2020 TL1431-SP

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 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. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Programming Output/Cathode Voltage
      4. 9.2.4 Total Accuracy
      5. 9.2.5 Stability
      6. 9.2.6 Start-up Time
      7. 9.2.7 Application Curve
      8. 9.2.8 System Examples
  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 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 Electrical Characteristics

at specified free-air temperature, IKA = 10 mA (unless otherwise noted)
PARAMETER TEST CONDITIONS TA (2) TEST CIRCUIT MIN TYP MAX UNIT
VI(ref) Reference input voltage VKA = VI(ref) 25°C Figure 7-1 2475 2500 2540 mV
Full range 2460 2550
VI(dev) Deviation of reference input voltage over full temperature range(3) VKA = VI(ref) Full range Figure 7-1 17 55(1) mV
GUID-7BDC3876-50BF-4C7B-A91A-AE545D4194D5-low.gif Ratio of change in reference input voltage to the change in cathode voltage ΔVKA = 3 V to 36 V Full range Figure 7-2 –1.1 –2 mV/V
II(ref) Reference input current R1 = 10 kΩ, R2 = ∞ 25°C Figure 7-2 1.5 2.5 μA
Full range 5
II(dev) Deviation of reference input current over full temperature range(3) R1 = 10 kΩ, R2 = ∞ Full range Figure 7-2 0.5 3(1) μA
Imin Minimum cathode current for regulation VKA = VI(ref) 25°C Figure 7-1 0.45 1 mA
Ioff Off-state cathode current VKA = 36 V, VI(ref) = 0 25°C Figure 7-3 0.18 0.5 μA
Full range 2
|zKA| Output impedance(4) VKA = VI(ref), f ≤ 1 kHz,
IKA = 1 mA to 100 mA		 25°C Figure 7-1 0.2 0.4 Ω
(1) On products compliant to MIL-PRF-38535, this parameter is not production tested.
(2) Full range is –55°C to 125°C.
(3) The deviation parameters VI(dev) and II(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 αVI(ref) is defined as:
GUID-81A115C9-D039-46AF-85AB-708C1686D683-low.gif
αVI(ref) is positive or negative, depending on whether minimum VI(ref) or maximum VI(ref), respectively, occurs at the lower temperature.
(4) The output impedance is defined as: GUID-EA0A613F-4563-4B48-8599-A41B61C72A77-low.gif
When the device is operating with two external resistors (see Figure 7-2), the total dynamic impedance of the circuit is given by: GUID-5BF545EA-4038-4A3D-A81A-464BA8D64F46-low.gif, which is approximately equal to GUID-97CC7F2B-1A0A-4A32-9CE9-B47B2ACD9ABE-low.gif .