SNVSBA4A
May 2019 – November 2019
TL431LI-Q1
,
TL432LI-Q1
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Parameter Measurement Information
8.1
Temperature Coefficient
8.2
Dynamic Impedance
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.4
Device Functional Modes
9.4.1
Open Loop (Comparator)
9.4.2
Closed Loop
10
Applications and Implementation
10.1
Application Information
10.2
Typical Applications
10.2.1
Comparator With Integrated Reference
10.2.2
Design Requirements
10.2.3
Detailed Design Procedure
10.2.3.1
Basic Operation
10.2.3.1.1
Overdrive
10.2.3.2
Output Voltage and Logic Input Level
10.2.3.2.1
Input Resistance
10.2.4
Application Curves
10.2.5
Precision LED Lighting Current Sink Regulator
10.2.5.1
Design Requirements
10.2.5.2
Detailed Design Procedure
10.2.5.2.1
Basic Operation
10.2.5.2.1.1
Output Current Range and Accuracy
10.2.5.2.2
Power Consumption
10.2.6
Shunt Regulator/Reference
10.2.6.1
Design Requirements
10.2.6.2
Detailed Design Procedure
10.2.6.2.1
Programming Output/Cathode Voltage
10.2.6.2.2
Total Accuracy
10.2.6.2.3
Stability
10.2.6.2.4
Start-up Time
10.2.6.3
Application Curves
10.2.7
Isolated Flyback with Optocoupler
10.2.7.1
Design Requirements
10.2.7.2
Detailed Design Procedure
10.2.7.2.1
TL431 Feedback Loop Error Calculation
10.3
System Examples
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Device Support
13.1.1
Device Nomenclature
13.2
Documentation Support
13.2.1
Related Documentation
13.3
Related Links
13.4
Receiving Notification of Documentation Updates
13.5
Support Resources
13.6
Trademarks
13.7
Electrostatic Discharge Caution
13.8
Glossary
14
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DBZ|3
MPDS108F
Thermal pad, mechanical data (Package|Pins)
Orderable Information
snvsba4a_oa
snvsba4a_pm
10.2
Typical Applications