Datasheet TLVH431B-EP (Texas Instruments) - 5

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TLVH431B-EP www.ti.com
SLVSFF4 – DECEMBER 2019
6.5 Electrical Characteristics
at –55°C to 125°C free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V TA = 25°C 1.234 1.24 1.246 V KA = VREF, REF Reference voltage V IK = 10 mA, see Figure 23 TA = full range(1) 1.221 1.265 VREF(dev) VREF deviation(2) VKA = VREF, IK = 10 mA, see Figure 23 11 31 mV DVREF Ratio of VREF change to IK = 10 mA, VK = VREF to 18 V, T DV cathode voltage change see Figure 24 A = 25°C –1.5 –2.7 mV/V KA I I K = 10 mA, R1 = 10 kΩ, R2 = ref Reference terminal current T open, see Figure 24 A = 25°C 0.1 0.5 μA Iref(dev) Iref deviation(2) IK = 10 mA, R1 = 10 kΩ, R2 = open, see Figure 24(1) 0.15 0.5 μA Minimum cathode current for TA = 25°C 60 100 IK(min) V μA regulation KA = VREF, see Figure 23 TA = full range(1) 200 V TA = 25°C 0.02 0.1 I REF = 0, VKA = 18 V, K(off) Off-state cathode current μA see Figure 25 TA = full range(1) 0.7 |zKA| Dynamic impedance(3) VKA = VREF, f ≤ 1 kHz, IK = 0.2 T mA to 70 mA, see Figure 23 A = 25°C 0.25 0.4 Ω (1) Full temperature range is –55°C to 125°C. (2) The deviation parameters VREF(dev) and Iref(dev) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. The average full-range temperature coefficient of the reference input voltage, αVREF, is defined as: æ V ö REF(dev ) 6 ´ 10 ç ÷ æ ppm V T = 25 C ° ö è ø REF ( A ) aV = ç ÷ REF è C ° ø T D A where ΔTA is the rated operating free-air temperature range of the device. αVREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at the lower temperature. (3) The dynamic impedance is defined as: V D KA zka = I D K When the device is operating with two external resistors (see Figure 24), the total dynamic impedance of the circuit is defined as: V D R1 æ ö z ¢ = » z ´ 1 ç + ÷ ka ka I D è R2 ø Copyright © 2019, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TLVH431B-EP Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 ESD Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 Electrical Characteristics 6.6 Typical Characteristics 7 Parameter Measurement Information 8 Detailed Description 8.1 Overview 8.2 Functional Block Diagram 8.3 Feature Description 8.4 Device Functional Modes 8.4.1 Open Loop (Comparator) 8.4.2 Closed Loop 9 Applications and Implementation 9.1 Application Information 9.2 Typical Applications 9.2.1 Comparator With Integrated Reference (Open Loop) 9.2.1.1 Design Requirements 9.2.1.2 Detailed Design Procedure 9.2.1.3 Application Curves 9.2.2 Shunt Regulator/Reference 9.2.2.1 Design Requirements 9.2.2.2 Detailed Design Procedure 9.2.2.3 Application Curve 10 Power Supply Recommendations 11 Layout 11.1 Layout Guidelines 11.2 Layout Example 12 Device and Documentation Support 12.1 Documentation Support 12.1.1 Related Documentation 12.2 Receiving Notification of Documentation Updates 12.3 Support Resources 12.4 Trademarks 12.5 Electrostatic Discharge Caution 12.6 Glossary 13 Mechanical, Packaging, and Orderable Information