Datasheet ATL432LI (Texas Instruments) - 5

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ATL431LI ATL432LI www.ti.com
SLVSDU6D – JULY 2017 – REVISED NOVEMBER 2019
7.5 Electrical Characteristics
over recommended operating conditions, TA = 25°C (unless otherwise noted)
PARAMETER TEST CIRCUIT TEST CONDITIONS MIN TYP MAX UNIT
ATL43xLIAx devices 2475 2500 2525 mV VREF Reference Voltage See Figure 17 VKA = Vref, IKA = 1 mA ATL43xLIBx devices 2487 2500 2512 mV Deviation of reference ATL43xLIxI devices 6 17 mV VI(dev) input voltage over full See Figure 17 VKA = Vref, IKA = 1 mA temperature range (1) ATL43xLIxQ devices 10 27 mV Ratio of change in ΔVKA = 10 V - Vref –1.4 –2.7 mV/V ΔVref / reference voltage to the See Figure 18 I ΔV KA = 1 mA KA change in cathode ΔVKA = 36 V - 10 V –1 –2 mV/V voltage Iref Reference Input Current See Figure 18 IKA = 1 mA, R1 = 10kΩ, R2 = ∞ 0.2 0.4 µA Deviation of reference II(dev) input current over full See Figure 18 IKA = 1 mA, R1 = 10kΩ, R2 = ∞ 0.1 0.3 µA temperature range (1) Minimum cathode Imin See Figure 17 V current for regulation KA = Vref 65 80 uA Off-state cathode Ioff See Figure 19 V current KA = 36 V, Vref = 0 0.1 1 µA |ZKA| Dynamic Impedance (2) See Figure 17 VKA = Vref, IKA = 1 mA to 15 mA 0.3 0.65 Ω (1) The deviation parameters VI(dev) and II(dev) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. For more details on VI(dev) and how it relates to the average temperature coefficient, see Parameter Measurement Information. (2) The dynamic impedance is defined by |ZKA| = ΔVKA/ΔIKA. For more details on |ZKA| and how it relates to VKA, see Parameter Measurement Information. Copyright © 2017–2019, Texas Instruments Incorporated Submit Documentation Feedback 5 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