Datasheet ATL432LI (Texas Instruments) - 6

ATL431LI ATL432LI
SLVSDU6D – JULY 2017 – REVISED NOVEMBER 2019
www.ti.com 8 Typical Characteristics
Data at high and low temperatures are applicable only within the recommended operating free-air temperature ranges of the various devices. 2.505 1 V I 2.5035 ka = Vref KA = 1 mA I 0.9 KA = 1 mA V 2.502 A 0.8 - e 2.5005 0.7 ag nt - µ lt re 2.499 ur 0.6 Vo C ce 0.5 n 2.4975 nce re e 2.496 re 0.4 ef efe R 0.3 - 2.4945 f - R reV 2.493 I ref 0.2 2.4915 0.1 2.49 0 -50 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 150 T T A - Free-Air Temperature - °C A - Free-Air Temperature - °C D002
Figure 1. Reference Voltage vs Free-Air Temperature Figure 2. Reference Current vs Free-Air Temperature
15 200 V V KA = Vref 175 KA = Vref T T A = 25°C A = 25°C 12 A 150 - µ t - mA 125 9 en ent I urr 100 min e Curr 6 75 de C od 50 ath atho 3 25 - C - C A A I K I K 0 0 -25 -3 -50 0 0.5 1 1.5 2 2.5 3 0 0.5 1 1.5 2 2.5 VKA - Cathode Voltage -V V D003 KA - Cathode Voltage - V D004
Figure 3. Cathode Current vs Cathode Voltage Figure 4. Cathode Current vs Cathode Voltage
0.064 -0.35 VKA = 36 V VKA = 3 V to 36 V A 0.056 VREF = 0 V -0.4 - P -0.45 ent 0.048 urr V/V -0.5 e C 0.04 m = -0.55 A hod 0.032 K at V -0.6 / ' te C 0.024 f re ta V -0.65 ' ff-S 0.016 -0.7 - O ff I o 0.008 -0.75 0 -0.8 -50 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 TA - Free-Air Temperature - °C Temperature (°C) D004 D006
Figure 5. Off-State Cathode Current Figure 6. Ratio of Delta Reference Voltage to Delta Cathode vs Free-Air Temperature Voltage vs Free-Air Temperature
6 Submit Documentation Feedback Copyright © 2017–2019, Texas Instruments Incorporated Product Folder Links: ATL431LI ATL432LI 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 8 Typical Characteristics 9 Parameter Measurement Information 9.1 Temperature Coefficient 9.2 Dynamic Impedance 10 Detailed Description 10.1 Overview 10.2 Functional Block Diagram 10.3 Feature Description 10.4 Device Functional Modes 10.4.1 Open Loop (Comparator) 10.4.2 Closed Loop 11 Applications and Implementation 11.1 Application Information 11.2 Typical Applications 11.2.1 Comparator With Integrated Reference 11.2.1.1 Design Requirements 11.2.1.2 Detailed Design Procedure 11.2.1.3 Application Curve 11.2.2 Precision Constant Current Sink 11.2.2.1 Design Requirements 11.2.2.2 Detailed Design Procedure 11.2.3 Shunt Regulator/Reference 11.2.3.1 Design Requirements 11.2.3.2 Detailed Design Procedure 11.2.3.3 Application Curve 11.2.4 Isolated Flyback with Optocoupler 11.2.4.1 Design Requirements 11.3 System Examples 12 Power Supply Recommendations 13 Layout 13.1 Layout Guidelines 13.2 SOT23-3 Layout Example 13.3 X2SON (DQN) Layout Example 13.4 Thermal Considerations 14 Device and Documentation Support 14.1 Documentation Support 14.1.1 Device Nomenclature 14.1.2 Related Documentation 14.2 Related Links 14.3 Receiving Notification of Documentation Updates 14.4 Community Resources 14.5 Trademarks 14.6 Electrostatic Discharge Caution 14.7 Glossary 15 Mechanical, Packaging, and Orderable Information