Datasheet TL432LI-Q1 (Texas Instruments) - 6

TL431LI-Q1 TL432LI-Q1
SNVSBA4A – MAY 2019 – REVISED NOVEMBER 2019
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. 2520 0.5 Vka = Vref IKA = 1 mA 2515 IKA = 1 mA V A 0.4 m 2510 µ - e t - g a 2505 lt ren o 0.3 V 2500 Cur e c ce n 2495 re 0.2 fe eren e 2490 ef R - f - R f re 2485 0.1 V I re 2480 2475 0 -50 -25 0 25 50 75 100 125 150 -50 -25 0 25 50 75 100 125 150 TA - Free-Air Temperature - °C T Book A - Free-Air Temperature - °C
Figure 1. Reference Voltage versus Free-Air Temperature Figure 2. Reference Current versus 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 t - en 0.048 t - mA 9 urr en C 0.04 e d 0.032 e Curr 6 tho od Ca te 0.024 ath 3 ta - C -S ff 0.016 AIK O 0 - ff I o 0.008 -3 0 0 0.5 1 1.5 2 2.5 3 -50 -25 0 25 50 75 100 125 150 V TA - Free-Air Temperature - °C KA - Cathode Voltage -V D003
Figure 4. Off-State Cathode Current Figure 3. Cathode Current versus Cathode Voltage versus Free-Air Temperature
-0.35 75 200 VKA = 3 V to 36 V Gain - dB -0.4 Phase on ti 60 160 -0.45 ica lif V/V -0.5 mp es m A re 45 120 = -0.55 A K Deg V -0.6 oltage / ' f 30 80 re al V V -0.65 gn Phase - ' -0.7 15 40 -0.75 - Small-Si V -0.8 A 0 0 -50 -25 0 25 50 75 100 125 150 100 1k 10k 100k 1M 10M Temperature (°C) D006 f - Frequency - Hz Ga G in
Figure 5. Ratio of Delta Reference Voltage to Delta Cathode Figure 6. Small-Signal Voltage Amplification Voltage versus Free-Air Temperature versus Frequency
6 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated Product Folder Links: TL431LI-Q1 TL432LI-Q1 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 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 10.2.3.2 Output Voltage and Logic Input Level 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 10.2.6 Shunt Regulator/Reference 10.2.6.1 Design Requirements 10.2.6.2 Detailed Design Procedure 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 10.3 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