SGLS302G March   2005  – May 2020 TL431-Q1 , TL432-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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: TL43x-Q1
    6. 6.6 Electrical Characteristics: TL43xA-Q1
    7. 6.7 Electrical Characteristics: TL43xB-Q1
    8. 6.8 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 Applications
      1. 9.2.1 Comparator Application
        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
          4. 9.2.1.2.4 Input Resistance
          5. 9.2.1.2.5 Deviation Parameters and Calculating Dynamic Impedance
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Other Application Circuits
  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 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

5 Pin Configuration and Functions

TL431A-Q1 DBV Package
5-Pin SOT-23
Top View
TL431-Q1 TL432-Q1 pin_out_DBV_SGLS302.gif
1. Pin 2 is connected internally to ANODE (die substrate) and must be left floating or connected to ANODE.
TL431-Q1 DBZ Package
3-Pin SOT-23
Top View
TL431-Q1 TL432-Q1 pinout3_slvsdq9.gif
TL432-Q1 DBZ Package
3-Pin SOT-23
Top View
TL431-Q1 TL432-Q1 pinout2_slvsdq9.gif

Pin Functions

PIN I/O DESCRIPTION
NAME TL431A-Q1 TL431-Q1 TL432-Q1
DBV DBZ DBZ
ANODE 5 3 3 O Common pin, normally connected to ground.
CATHODE 3 1 2 I/O Shunt current or voltage input
NC 1, 2 — — — No connection(1)
REF 4 2 1 I Threshold relative to common anode
(1) Pin 2 of the 5-pin DBV (SOT-23) package is connected internally to ANODE (die substrate) and must be left floating or connected to ANODE.