SLVSCV5E March   2015  – December 2024 ATL431 , ATL432

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, ATL431Ax, ATL432Ax
    6. 5.6 Electrical Characteristics, ATL431Bx, ATL432Bx
    7. 5.7 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 Application 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 Curve
      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 Curves
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

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

5.5 Electrical Characteristics, ATL431Ax, ATL432Ax

over recommended operating conditions, TA = 25°C (unless otherwise noted)
PARAMETER TEST CIRCUIT TEST CONDITIONS MIN TYP MAX UNIT
Vref Reference voltage Figure 6-1 VKA = Vref, IKA = 1mA 2475 2500 2525 mV
VI(dev) Deviation of reference input voltage over full temperature range, see section Figure 6-1 VKA = Vref,
IKA = 1mA,		 ATL43xAI; TA =
-40°C to 85°C		 5 15 mV
ATL43xAQ; TA =
-40°C to 125°C		 6 34
ΔVref / ΔVKA Ratio of change in reference voltage to the change in cathode voltage Figure 6-2 IKA = 1mA ΔVKA = 10V − Vref –0.4 –2.7 mV/V
ΔVKA = 36V − 10V –0.1 –2
Iref Reference input current Figure 6-2 IKA = 1mA, R1 = 10kΩ, R2 = ∞ 30 150 nA
II(dev) Deviation of reference input current over full temperature range, see section Figure 6-2 IKA = 1mA, R1 = 10kΩ, R2 = ∞ 20 50 nA
Imin Minimum cathode current for regulation Figure 6-1
Figure 5-5		 VKA = Vref 20 35 µA
Ioff Off-state cathode current Figure 6-3 VKA = 36V, Vref = 0 0.05 0.2 µA
|zKA| Dynamic impedance, see section Figure 6-1 VKA = Vref, f ≤ 1 kHz, IKA = 1 mA to 100 mA 0.05 0.3 Ω