Datasheet TL432LI (Texas Instruments) - 6

TL431LI TL432LI
SLVSDQ6A – JULY 2018 – REVISED NOVEMBER 2018
www.ti.com 7.6 Typical Characteristics
Data at high and low temperatures are applicable only within the recommended operating free-air temperature ranges of the various devices. 2.5005 1 Vka = Vref IKA = 1 mA 2.499 0.9 IKA = 1 mA 2.4975 A 0.8 - V 2.496 nt - µ 0.7 re oltage 2.4945 ur 0.6 V C nce 2.493 0.5 nce re 2.4915 re 0.4 efe efe - R 2.49 0.3 - R refV 2.4885 I ref 0.2 2.487 0.1 2.4855 0 -50 -25 0 25 50 75 100 125 150 -50 -25 0 25 50 75 100 125 TA - Free-Air Temperature - °C T Bo D0ok 01 A - Free-Air Temperature - °C D002
Figure 1. Reference Voltage vs Free-Air Temperature Figure 2. Reference Current vs Free-Air Temperature
15 0.064 V V KA = Vref KA = 36 V T A V A = 25°C 0.056 REF = 0 V 12 - P ent 0.048 t - mA urr 9 en e C 0.04 hod 0.032 e Curr 6 at od te C 0.024 ath 3 ta - C ff-S 0.016 AIK 0 - O ff I o 0.008 -3 0 0 0.5 1 1.5 2 2.5 3 -50 -25 0 25 50 75 100 125 V TA - Free-Air Temperature - °C KA - Cathode Voltage -V D004 D003
Figure 3. Cathode Current vs Cathode Voltage Figure 4. Off-State Cathode Current vs Free-Air Temperature
-1.05 VKA = 3 V to 36 V -1.2 nit) -1.35 LE (U TIT IS -1.5 AX Y -1.65 -1.8 -50 -25 0 25 50 75 100 125 Temperature (°C) D006
Figure 5. Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Free-Air Temperature
6 Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated Product Folder Links: TL431LI TL432LI Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Device Comparison Table 6 Pin Configuration and Functions 7 Specifications 7.1 Absolute Maximum Ratings 7.2 ESD Ratings 7.3 Thermal Information 7.4 Recommended Operating Conditions 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 10.2.1.1 Design Requirements 10.2.1.2 Detailed Design Procedure 10.2.1.3 Application Curve 10.2.2 Precision Constant Current Sink 10.2.2.1 Design Requirements 10.2.2.2 Detailed Design Procedure 10.2.3 Shunt Regulator/Reference 10.2.3.1 Design Requirements 10.2.3.2 Detailed Design Procedure 10.2.3.3 Application Curve 10.2.4 Isolated Flyback with Optocoupler 10.2.4.1 Design Requirements 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 Related Links 13.2 Documentation Support 13.2.1 Device Nomenclature 13.2.2 Related Documentation 13.3 Receiving Notification of Documentation Updates 13.4 Community Resources 13.5 Trademarks 13.6 Electrostatic Discharge Caution 13.7 Glossary 14 Mechanical, Packaging, and Orderable Information