TLV431BQDBZT

Product Folder Order Now Support & Community Tools & Software Technical Documents TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 TLV431x Low-Voltage Adjustable Precision Shunt Regulator 1 Features 3 Description • • • The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24 V) and 6 V with two external resistors (see the Parameter Measurement Information section). These devices operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references. 1 • • • • • • Low-Voltage Operation, VREF = 1.24 V Adjustable Output Voltage, VO = VREF to 6 V Reference Voltage Tolerances at 25°C – 0.5% for TLV431B – 1% for TLV431A – 1.5% for TLV431 Typical Temperature Drift – 4 mV (0°C to 70°C) – 6 mV (–40°C to 85°C) – 11 mV (–40°C to 125°C) Low Operational Cathode Current, 80 µA Typical 0.25-Ω Typical Output Impedance Ultra-Small SC-70 Package Offers 40% Smaller Footprint Than SOT-23-3 See TLVH431 and TLVH432 for: – Wider VKA (1.24 V to 18 V) and IK (80 mA) – Additional SOT-89 Package – Multiple Pinouts for SOT-23-3 and SOT-89 Packages On Products Compliant to MIL-PRF-38535, All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters. 2 Applications • • • • • Adjustable Voltage and Current Referencing Secondary Side Regulation in Flyback SMPSs Zener Replacement Voltage Monitoring Comparator With Integrated Reference When used with an optocoupler, the TLV431 device is an ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. These devices have a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turnon characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies. Device Information(1) PART NUMBER TLV431x PACKAGE (PIN) BODY SIZE (NOM) SOT-23 (3) 2.90 mm × 1.30 mm SOT-23 (5) 2.90 mm × 1.60 mm SC70 (6) 2.00 mm × 1.25 mm TO-92 (3) 4.30 mm × 4.30 mm SOIC (8) 4.90 mm × 3.90 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic VO Input IK VREF 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 4 4 4 4 5 6 7 8 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics for TLV431........................ Electrical Characteristics for TLV431A ..................... Electrical Characteristics for TLV431B ..................... Typical Characteristics .............................................. Parameter Measurement Information ................ 16 Detailed Description ............................................ 17 8.1 Overview ................................................................. 17 8.2 Functional Block Diagram ....................................... 17 8.3 Feature Description................................................. 17 8.4 Device Functional Modes........................................ 18 9 Applications and Implementation ...................... 19 9.1 Application Information............................................ 19 9.2 Typical Applications ................................................ 20 10 Power Supply Recommendations ..................... 24 11 Layout................................................................... 24 11.1 Layout Guidelines ................................................. 24 11.2 Layout Example .................................................... 24 12 Device and Documentation Support ................. 25 12.1 12.2 12.3 12.4 12.5 12.6 12.7 Documentation Support ........................................ Related Links ........................................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 25 25 25 25 25 25 25 13 Mechanical, Packaging, and Orderable Information ........................................................... 25 4 Revision History Changes from Revision W (March 2018) to Revision X • Page Changed figure 18 ............................................................................................................................................................... 14 Changes from Revision V (January 2015) to Revision W Page • Changed crossreference link in the Description section ....................................................................................................... 1 • Changed the Stability Boundary Conditions graph .............................................................................................................. 13 • Added the Phase Margin vs Capacitive Load VKA = VREF (1.25 V), TA= 25°C graph ........................................................... 14 • Added the Phase Margin vs Capacitive Load VKA = 2.50 V, TA= 25°C graph...................................................................... 14 • Added the Phase Margin vs Capacitive Load VKA = 5.00 V, TA= 25°C graph...................................................................... 15 • Added Documentation Support section ............................................................................................................................... 25 • Added Receiving Notification of Documentation Updates section ...................................................................................... 25 • Added Community Resources section ................................................................................................................................ 25 Changes from Revision U (January 2014) to Revision V • Page Added Applications, Device Information table, Pin Functions table, ESD Ratings table, Thermal Information table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section. ..................................................................................................................... 1 Changes from Revision T (June 2007) to Revision U Page • Updated document to new TI data sheet format. ................................................................................................................... 1 • Deleted Ordering Information table. ....................................................................................................................................... 1 • Updated Features. .................................................................................................................................................................. 1 2 Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 5 Pin Configuration and Functions DBV (SOT-23-5) PACKAGE (TOP VIEW) D (SOIC) PACKAGE (TOP VIEW) CATHODE ANODE ANODE NC 1 8 2 7 3 6 4 5 REF ANODE ANODE NC NC 1 ∗ 2 CATHODE 3 ANODE ANODE 4 REF REF 1 CATHODE 2 3 DCK (SC-70) PACKAGE (TOP VIEW) CATHODE CATHODE NC REF ANODE 2 5 1 6 2 5 3 4 LP (TO-92/TO-226) PACKAGE (TOP VIEW) ANODE NC NC CATHODE ANODE REF REF 1 ANODE NC − No internal connection ∗ For TLV431, TLV431A: NC − No internal connection ∗ For TLV431B: Pin 2 is attached to Substrate and must be connected to ANODE or left open. PK (SOT-89) PACKAGE (TOP VIEW) 3 DBZ (SOT-23-3) PACKAGE (TOP VIEW) NC − No internal connection Pin Functions PIN NAME TYPE DESCRIPTION DBZ DBV PK D LP DCK CATHODE 2 3 3 1 1 1 I/O REF 1 4 1 8 3 3 I Threshold relative to common anode ANODE 3 5 2 2, 3, 6, 7 2 6 O Common pin, normally connected to ground NC — 1 — 4, 5 — 2, 4, 5 I No Internal Connection * — 2 — — — — I Substrate Connection Shunt Current/Voltage input Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 3 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) MIN VKA Cathode voltage (2) IK Continuous cathode current Iref Reference current MAX UNIT 7 V –20 20 mA –0.05 3 mA 150 °C 150 °C Operating virtual junction temperature Tstg (1) (2) Storage temperature –65 Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Voltage values are with respect to the anode terminal, unless otherwise noted. 6.2 ESD Ratings PARAMETER Electrostatic discharge V(ESD) (1) (2) DEFINITION VALUE Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins (1) ±2000 Charged device model (CDM), per JEDEC specification JESD22-C101, all pins (2) ±1000 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT VKA Cathode voltage VREF 6 V IK Cathode current 0.1 15 mA TA Operating free-air temperature TLV431_C 0 70 TLV431_I –40 85 TLV431_Q –40 125 °C 6.4 Thermal Information TLV431x THERMAL METRIC (1) DCK D PK DBV DBZ LP 6 PINS 8 PINS 3 PINS 5 PINS 3 PINS 3 PINS UNIT RθJA Junction-to-ambient thermal resistance 87 97 52 206 206 140 °C/W RθJC(top) Junction-to-case (top) thermal resistance 259 39 9 131 76 55 °C/W (1) 4 For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report (SPRA953). Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 6.5 Electrical Characteristics for TLV431 at 25°C free-air temperature (unless otherwise noted) PARAMETER TLV431 TEST CONDITIONS TA = 25°C VREF VKA = VREF, IK = 10 mA Reference voltage VREF(dev) DVREF VREF deviation over full temperature range (2) TA = full range (1) (see Figure 22) VKA = VREF, IK = 10 mA (1) (see Figure 22) MIN TYP MAX 1.222 1.24 1.258 TLV431C 1.21 1.27 TLV431I 1.202 1.278 TLV431Q 1.194 UNIT V 1.286 TLV431C 4 12 TLV431I 6 20 TLV431Q 11 31 mV Ratio of VREF change in cathode voltage change VKA = VREF to 6 V, IK = 10 mA (see Figure 23) –1.5 –2.7 mV/V Iref Reference terminal current IK = 10 mA, R1 = 10 kΩ, R2 = open (see Figure 23) 0.15 0.5 µA 0.05 0.3 Iref deviation over full temperature range (2) IK = 10 mA, R1 = 10 kΩ, R2 = open (1) (see Figure 23) TLV431C Iref(dev) TLV431I 0.1 0.4 TLV431Q 0.15 0.5 DVKA TLV431C/I 55 80 TLV431Q 55 100 0.001 0.1 µA 0.25 0.4 Ω IK(min) Minimum cathode current for regulation VKA = VREF (see Figure 22) IK(off) Off-state cathode current VREF = 0, VKA = 6 V (see Figure 24) |zKA| Dynamic impedance (3) VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 15 mA (see Figure 22) (1) (2) µA µA Full temperature ranges are –40°C to 125°C for TLV431Q, –40°C to 85°C for TLV431I, and 0°C to 70°C for TLV431C. 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: VREF(dev ) æ ö 6 ç ÷ ´ 10 ppm ö è VREF (TA = 25°C ) ø æ aVREF ç ÷= DTA è °C ø 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) DVKA The dynamic impedance is defined as zka = DIK spacer When the device is operating with two external resistors (see Figure 23), the total dynamic impedance of the circuit is defined as: z ka ¢= DV DI » z ka æ è ´ ç1 + R1 ö ÷ R2 ø Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 5 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com 6.6 Electrical Characteristics for TLV431A at 25°C free-air temperature (unless otherwise noted) PARAMETER TLV431A TEST CONDITIONS TA = 25°C VREF VKA = VREF, IK = 10 mA Reference voltage VREF(dev) DVREF TA = full range (1) (see Figure 22) VKA = VREF, IK = 10 mA (1) (see Figure 22) VREF deviation over full temperature range (2) MIN TYP MAX 1.228 1.24 1.252 TLV431AC 1.221 1.259 TLV431AI 1.215 1.265 TLV431AQ 1.209 UNIT V 1.271 TLV431AC 4 12 TLV431AI 6 20 TLV431AQ 11 31 mV Ratio of VREF change in cathode voltage change VKA = VREF to 6 V, IK = 10 mA (see Figure 23) –1.5 –2.7 mV/V Iref Reference terminal current IK = 10 mA, R1 = 10 kΩ, R2 = open (see Figure 23) 0.15 0.5 µA TLV431AC 0.05 0.3 Iref(dev) Iref deviation over full temperature IK = 10 mA, R1 = 10 kΩ, range (2) R2 = open (1) (see Figure 23) TLV431AI 0.1 0.4 TLV431AQ 0.15 0.5 DVKA TLV431AC/AI 55 80 TLV431AQ 55 100 0.001 0.1 µA 0.25 0.4 Ω IK(min) Minimum cathode current for regulation VKA = VREF (see Figure 22) IK(off) Off-state cathode current VREF = 0, VKA = 6 V (see Figure 24) |zKA| Dynamic impedance (3) VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 15 mA (see Figure 22) (1) (2) µA µA Full temperature ranges are –40°C to 125°C for TLV431Q, –40°C to 85°C for TLV431I, and 0°C to 70°C for TLV431C. 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: VREF(dev ) æ ö 6 ç ÷ ´ 10 ppm ö è VREF (TA = 25°C ) ø æ aVREF ç ÷= DTA è °C ø 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) DVKA The dynamic impedance is defined as zka = DIK spacer When the device is operating with two external resistors (see Figure 23), the total dynamic impedance of the circuit is defined as: z ka 6 ¢= DV DI » z ka æ è ´ ç1 + R1 ö ÷ R2 ø Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 6.7 Electrical Characteristics for TLV431B at 25°C free-air temperature (unless otherwise noted) PARAMETER TLV431B TEST CONDITIONS TA = 25°C VREF VKA = VREF, IK = 10 mA Reference voltage VREF(dev) DVREF VREF deviation over full temperature range (2) TA = full range (1) (see Figure 22) VKA = VREF , IK = 10 mA (1) (see Figure 22) Ratio of VREF change in cathode voltage change VKA = VREF to 6 V, IK = 10 mA (see Figure 23) Iref Reference terminal current IK = 10 mA, R1 = 10 kΩ, R2 = open (see Figure 23) Iref(dev) Iref deviation over full temperature range (2) IK = 10 mA, R1 = 10 kΩ, R2 = open (3) (see Figure 23) DVKA 1.234 1.24 1.246 1.253 TLV431BI 1.224 1.259 TLV431BQ 1.221 UNIT V 1.265 TLV431BC 4 12 TLV431BI 6 20 TLV431BQ 11 31 –1.5 –2.7 mV/V 0.1 0.5 µA TLV431BC 0.05 0.3 TLV431BI 0.1 0.4 TLV431BQ 0.15 0.5 55 100 µA 0.001 0.1 µA 0.25 0.4 Ω VKA = VREF (see Figure 22) IK(off) Off-state cathode current VREF = 0, VKA = 6 V (see Figure 24) |zKA| Dynamic impedance (4) VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 15 mA (see Figure 22) (4) MAX 1.227 Minimum cathode current for regulation (3) TYP TLV431BC IK(min) (1) (2) MIN mV µA Full temperature ranges are –40°C to 125°C for TLV431Q, –40°C to 85°C for TLV431I, and 0°C to 70°C for TLV431C. 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: VREF(dev ) æ ö 6 ç ÷ ´ 10 ppm ö è VREF (TA = 25°C ) ø æ aVREF ç ÷= DTA è °C ø 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. Full temperature ranges are –40°C to 125°C for TLV431Q, –40°C to 85°C for TLV431I, and 0°C to 70°C for TLV431C. DVKA The dynamic impedance is defined as zka = DIK spacer When the device is operating with two external resistors (see Figure 23), the total dynamic impedance of the circuit is defined as: z ka ¢= DV DI » z ka æ è ´ ç1 + R1 ö ÷ R2 ø Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 7 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com 6.8 Typical Characteristics Operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions table are not implied. 250 1.254 IK = 10 mA R1 = 10 kΩ R2 = Open IK = 10 mA I ref − Reference Input Current − nA V ref − Reference Voltage − V 1.252 1.250 1.248 1.246 1.244 1.242 1.240 1.238 − 50 − 25 0 25 50 75 100 125 200 150 100 50 − 50 150 − 25 TJ − Junction Temperature − °C 150 Figure 2. Reference Input Current vs Junction Temperature (for TLV431 and TLV431A) Figure 1. Reference Voltage vs Junction Temperature 15 250 VKA = VREF TA = 25°C IK = 10 mA R1 = 10 kΩ R2 = Open 230 210 10 I K − Cathode Current − mA I ref − Reference Input Current − nA 0 25 50 75 100 125 TJ − Junction Temperature − °C 190 170 150 130 110 90 5 0 −5 −10 70 50 −50 −25 0 25 50 75 100 125 −15 −1 150 TJ − Junction Temperature − °C 200 1.5 VKA = VREF TA = 25°C 150 I K − Cathode Current − µ A Ik(min) 250 100 50 0 −50 − 100 − 150 − 200 -20 0 20 40 60 80 Temperature (qC) 100 120 140 Figure 5. Minimum Cathode Current vs Temperature 8 0 0.5 1 VKA − Cathode Voltage − V Figure 4. Cathode Current vs Cathode Voltage Figure 3. Reference Input Current vs Junction Temperature (for TLV431B) 120 115 110 105 100 95 90 85 80 75 70 65 60 55 -40 −0.5 Submit Documentation Feedback − 250 −1 − 0.5 0 0.5 1 VKA − Cathode Voltage − V 1.5 Figure 6. Cathode Current vs Cathode Voltage Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 Typical Characteristics (continued) Operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions table are not implied. 3000 VKA = 5 V VREF = 0 I K(off) − Off-State Cathode Current − nA I K(off) − Off-State Cathode Current − nA 40 30 20 10 0 − 50 −25 0 25 50 75 100 125 VKA = 6 V VREF = 0 2500 2000 1500 1000 500 0 −50 150 −25 Figure 7. Off-State Cathode Current vs Junction Temperature (for TLV431 and TLV431A) ∆V ref/ ∆V KA − Ratio of Delta Reference Voltage to Delta Cathode Voltage − mV/V ∆V ref/ ∆V KA − Ratio of Delta Reference Voltage to Delta Cathode Voltage − mV/V 50 75 100 125 150 0.0 0 − 0.1 − 0.2 − 0.3 − 0.4 − 0.5 − 0.6 − 0.8 − 50 25 Figure 8. Off-State Cathode Current vs Junction Temperature (for TLV431B) 0 − 0.7 0 TJ − Junction Temperature − °C TJ − Junction Temperature − °C IK = 10 mA ∆VKA = VREF to 6 V − 25 0 25 50 75 100 125 150 −0.1 IK = 10 mA ∆VKA = VREF to 6 V −0.2 −0.3 −0.4 −0.5 −0.6 −0.7 −0.8 −0.9 −1 −1.0 −50 −25 TJ − Junction Temperature − °C Figure 9. Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Junction Temperature (for TLV431 and TLV431A) 0 25 50 75 100 125 150 TJ − Junction Temperature − °C Figure 10. Ratio of Delta Reference Voltage to Delta Cathode Voltage vs Junction Temperature (for TLV431B) Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 9 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com Typical Characteristics (continued) Operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions table are not implied. 0.025 V ref − % Percentage Change in Vref IK = 1 mA % Change (avg) −0.025 % Change (3δ ) −0.05 −0.075 −0.1 % Change (−3δ) −0.125 0 10 20 30 40 50 60 Operating Life at 55°C − kh‡ ‡ Extrapolated from life-test data taken at 125°C; the activation energy assumed is 0.7 eV. Figure 11. Percentage Change in VREF vs Operating Life at 55°C Vn − Equivalent Input Noise Voltage − nV/ Hz 3V VKA = VREF IK = 1 mA TA = 25°C 1 kΩ 300 + 750 Ω 470 µF 2200 µF + 250 TLV431 or TLV431A or TLV431B 200 TLE2027 + _ TP 820 Ω 160 kΩ 160 Ω TEST CIRCUIT FOR EQUIVALENT INPUT NOISE VOLTAGE 150 10 100 1k 10k 100k f − Frequency − Hz Figure 12. Equivalent Input Noise Voltage 10 Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 Typical Characteristics (continued) Operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions table are not implied. EQUIVALENT INPUT NOISE VOLTAGE OVER A 10-s PERIOD Vn − Equivalent Input Noise Voltage − µ V 10 f = 0.1 Hz to 10 Hz IK = 1 mA TA = 25°C 8 6 4 2 0 −2 −4 −6 −8 −10 0 2 4 6 8 10 t − Time − s 3V 1 kΩ + 470 µF 750 Ω 0.47 µF 2200 µF + 820 Ω TLV431 or TLV431A or TLV431B TLE2027 10 kΩ + _ 160 kΩ 10 kΩ TLE2027 + _ 2.2 µF + 1 µF TP CRO 1 MΩ 33 kΩ 16 Ω 0.1 µF 33 kΩ TEST CIRCUIT FOR 0.1-Hz TO 10-Hz EQUIVALENT NOISE VOLTAGE Figure 13. Equivalent Noise Voltage over a 10-s Period Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 11 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com Typical Characteristics (continued) 80 0° IK = 10 mA TA = 25°C 70 36° 60 72° 50 108° 40 144° 30 180° Phase Shift A V − Small-Signal Voltage Gain/Phase Margin − dB Operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions table are not implied. SMALL-SIGNAL VOLTAGE GAIN/PHASE MARGIN vs FREQUENCY µF Output IK 6.8 kΩ 180 Ω 10 5V 4.3 kΩ 20 10 GND 0 −10 −20 100 TEST CIRCUIT FOR VOLTAGE GAIN AND PHASE MARGIN 1k 10k 100k 1M f − Frequency − Hz Figure 14. Voltage Gain and Phase Margin REFERENCE IMPEDANCE vs FREQUENCY 100 |z ka | − Reference Impedance − Ω IK = 0.1 mA to 15 mA TA = 25°C 100 Ω Output 10 IK 100 Ω 1 − + GND 0.1 TEST CIRCUIT FOR REFERENCE IMPEDANCE 0.01 1k 10k 100k 1M 10M f − Frequency − Hz Figure 15. Reference Impedance vs Frequency 12 Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 Typical Characteristics (continued) Operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions table are not implied. PULSE RESPONSE 1 3.5 3 Input and Output Voltage − V R = 18 kΩ TA = 25°C Input 18 kΩ Output 2.5 Ik 2 1.5 Pulse Generator f = 100 kHz Output 50 Ω 1 GND 0.5 0 TEST CIRCUIT FOR PULSE RESPONSE 1 − 0.5 0 1 2 3 4 5 6 7 8 t − Time − µs Figure 16. Pulse Response 1 PULSE RESPONSE 2 3.5 3 Input and Output Voltage − V R = 1.8 kΩ TA = 25°C Input 1.8 kΩ Output 2.5 IK 2 1.5 Pulse Generator f = 100 kHz Output 50 Ω 1 GND 0.5 0 TEST CIRCUIT FOR PULSE RESPONSE 2 −0.5 0 1 2 3 4 5 6 7 8 t − Time − µs Figure 17. Pulse Response 2 Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 13 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com Typical Characteristics (continued) Operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions table are not implied. STABILITY BOUNDARY CONDITION Á 150 Ÿ (for TLV431A) IK 15 TA = 25°C + IK = 15 mA Max CL IK í Cathode Current í mA 9 Stable Vbat í VKA = VREF 12 Stable TEST CIRCUIT FOR VKA = VREF 150 Ÿ VKA = 2 V IK 6 R1 = 10 kŸ CL R2 3 + í Vbat VKA = 3 V 0 0.001 0.01 0.1 1 10 TEST CIRCUIT FOR VKA = 2 V, 3 V CL í Load Capacitance í µF ‡ The areas under the curves represent conditions that may cause the device to oscillate. For VKA = 2-V and 3-V curves, R2 and Vbat were adjusted to establish the initial VKA and IK conditions with CL = 0. Vbat and CL then were adjusted to determine the ranges of stability. Figure 18. Stability Boundary Conditions IK Figure 19. Phase Margin vs Capacitive Load VKA = VREF (1.25 V), TA= 25°C 14 Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 Typical Characteristics (continued) Operation of the device at these or any other conditions beyond those indicated in the Recommended Operating Conditions table are not implied. IK Figure 20. Phase Margin vs Capacitive Load VKA = 2.50 V, TA= 25°C IK Figure 21. Phase Margin vs Capacitive Load VKA = 5.00 V, TA= 25°C Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 15 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com 7 Parameter Measurement Information VO Input IK VREF Figure 22. Test Circuit for VKA = VREF, VO = VKA = VREF xxx xxx xxx Input VO IK R1 R2 Iref VREF Figure 23. Test Circuit for VKA > VREF, VO = VKA = VREF × (1 + R1/R2) + Iref × R1 xxx xxx xxx Input VO IK(off) Figure 24. Test Circuit for IK(off) 16 Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 8 Detailed Description 8.1 Overview TLV431 is a low power counterpart to TL431, having lower reference voltage (1.24 V vs 2.5 V) for lower voltage adjustability and lower minimum cathode current (Ik(min)= 100 µA vs 1 mA). Like TL431, TLV431 is used in conjunction with it's key components to behave as a single voltage reference, error amplifier, voltage clamp, or comparator with integrated reference. TLV431 can be operated and adjusted to cathode voltages from 1.24 V to 6 V, making this part optimum for a wide range of end equipments in industrial, auto, telecom, and computing. For this device to behave as a shunt regulator or error amplifier, > 100 µA (Imin(max)) must be supplied in to the cathode pin. Under this condition, feedback can be applied from the Cathode and Ref pins to create a replica of the internal reference voltage. Various reference voltage options can be purchased with initial tolerances (at 25°C) of 0.5%, 1%, and 1.5%. These reference options are denoted by B (0.5%), A (1.0%), and blank (1.5%) after the TLV431. The TLV431xC devices are characterized for operation from 0°C to 70°C, the TLV431xI devices are characterized for operation from –40°C to 85°C, and the TLV431xQ devices are characterized for operation from –40°C to 125°C. 8.2 Functional Block Diagram CATHODE + REF _ Vref ANODE 8.3 Feature Description TLV431 consists of an internal reference and amplifier that outputs a sink current base on the difference between the reference pin and the virtual internal pin. The sink current is produced by an internal darlington pair. When operated with enough voltage headroom (≥ 1.24 V) and cathode current (Ika), TLV431 forces the reference pin to 1.24 V. However, the reference pin can not be left floating, as it requires Iref ≥ 0.5 µA (see the Functional Block Diagram). This is because the reference pin is driven into an npn, which requires a base current to operate properly. When feedback is applied from the Cathode and Reference pins, TLV431 behaves as a Zener diode, regulating to a constant voltage dependent on current being supplied into the cathode. This is due to the internal amplifier and reference entering the proper operating regions. The same amount of current required in the above feedback situation must be applied to this device in open-loop, servo, or error-amplifying implementations for it to be in the proper linear region giving TLV431 enough gain. Unlike many linear regulators, TLV431 is internally compensated to be stable without an output capacitor between the cathode and anode. However, if it is desired to use an output capacitor Figure 18 can be used as a guide to assist in choosing the correct capacitor to maintain stability. Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 17 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com 8.4 Device Functional Modes 8.4.1 Open Loop (Comparator) When the cathode/output voltage or current of TLV431 is not being fed back to the reference/input pin in any form, this device is operating in open loop. With proper cathode current (Ika) applied to this device, TLV431 will have the characteristics shown in Figure 6. With such high gain in this configuration, TLV431 is typically used as a comparator. With the reference integrated makes TLV431 the preferred choice when users are trying to monitor a certain level of a single signal. 8.4.2 Closed Loop When the cathode/output voltage or current of TLV431 is being fed back to the reference/input pin in any form, this device is operating in closed loop. The majority of applications involving TLV431 use it in this manner to regulate a fixed voltage or current. The feedback enables this device to behave as an error amplifier, computing a portion of the output voltage and adjusting it to maintain the desired regulation. This is done by relating the output voltage back to the reference pin in a manner to make it equal to the internal reference voltage, which can be accomplished through resistive or direct feedback. 18 Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 9 Applications and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information Figure 25 shows the TLV431, TLV431A, or TLV431B used in a 3.3-V isolated flyback supply. Output voltage VO can be as low as reference voltage VREF (1.24 V ± 1%). The output of the regulator, plus the forward voltage drop of the optocoupler LED (1.24 + 1.4 = 2.64 V), determine the minimum voltage that can be regulated in an isolated supply configuration. Regulated voltage as low as 2.7 Vdc is possible in the topology shown in Figure 25. The 431 family of devices are prevalent in these applications, being designers go to choice for secondary side regulation. Due to this prevalence, this section will further go on to explain operation and design in both states of TLV431 that this application will see, open loop (Comparator + Vref) and closed loop (Shunt Regulator). Further information about system stability and using a TLV431 device for compensation can be found in the application note Compensation Design With TL431 for UCC28600 (SLUA671). ~ VI 120 V − + P ~ VO 3.3 V P P Gate Drive VCC Controller VFB TLV431 or TLV431A or TLV431B Current Sense GND P P P P Figure 25. Flyback With Isolation Using TLV431, TLV431A, or TLV431B as Voltage Reference and Error Amplifier Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 19 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com 9.2 Typical Applications 9.2.1 Comparator With Integrated Reference (Open Loop) Vsup Rsup Vout CATHODE R1 RIN VIN REF VL + R2 1.24 V ANODE Figure 26. Comparator Application Schematic 9.2.1.1 Design Requirements For this design example, use the parameters listed in Table 1 as the input parameters. Table 1. Design Parameters DESIGN PARAMETER EXAMPLE VALUE Input Voltage Range 0 V to 5 V Input Resistance 10 kΩ Supply Voltage 5V Cathode Current (Ik) 500 µA Output Voltage Level ~1 V - Vsup Logic Input Thresholds VIH/VIL VL 9.2.1.2 Detailed Design Procedure When using TLV431 as a comparator with reference, determine the following: • Input voltage range • Reference voltage accuracy • Output logic input high and low level thresholds • Current source resistance 9.2.1.2.1 Basic Operation In the configuration shown in Figure 26 TLV431 will behave as a comparator, comparing the Vref pin voltage to the internal virtual reference voltage. When provided a proper cathode current (Ik), TLV431 will have enough open-loop gain to provide a quick response. With the TLV431's maximum operating current (Imin(max)) being 100 µA and up to 150 µA over temperature, operation below that could result in low gain, leading to a slow response. 20 Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 9.2.1.2.2 Overdrive Slow or inaccurate responses can also occur when the reference pin is not provided enough overdrive voltage. This is the amount of voltage that is higher than the internal virtual reference. The internal virtual reference voltage will be within the range of 1.24 V ±(0.5%, 1.0%, or 1.5%) depending on which version is being used. The more overdrive voltage provided, the faster the TLV431 will respond. This can be seen in Figure 27 and Figure 28 where it displays the output responses to various input voltages. For applications where TLV431 is being used as a comparator, it is best to set the trip point to greater than the positive expected error (that is, +1.0% for the A version). For fast response, setting the trip point to > 10% of the internal Vref should suffice. For minimal voltage drop or difference from Vin to the ref pin, TI recommends using an input resistor < 10 kΩ to provide Iref. 9.2.1.2.3 Output Voltage and Logic Input Level In order for TLV431 to properly be used as a comparator, the logic output must be readable by the receiving logic device. This is accomplished by knowing the input high and low level threshold voltage levels, typically denoted by VIH and VIL. As seen in Figure 27, TLV431's output low level voltage in open-loop/comparator mode is approximately 1 V, which is sufficient for some 3.3-V supplied logic. However, this would not work for 2.5-V or 1.8-V supplied logic. To accommodate this a resistive divider can be tied to the output to attenuate the output voltage to a voltage legible to the receiving low voltage logic device. TLV431's output high voltage is approximately Vsup due to TLV431 being open-collector. If Vsup is much higher than the receiving logic's maximum input voltage tolerance, the output must be attenuated to accommodate the outgoing logic's reliability. When using a resistive divider on the output, be sure to make the sum of the resistive divider (R1 and R2 in Figure 26) is much greater than Rsup in order to not interfere with TLV431's ability to pull close to Vsup when turning off. 9.2.1.2.3.1 Input Resistance TLV431 requires an input resistance in this application to source the reference current (Iref) needed from this device to be in the proper operating regions while turning on. The actual voltage seen at the ref pin will be Vref = Vin – Iref × Rin. Because the Iref can be as high as 0.5 µA, TI recommends using a resistance small enough that will mitigate the error that Iref creates from Vin. 12 11 10 9 8 7 6 5 4 3 2 1 0 -1 -2 -0.4 10 Vin~1.24V (+/-5%) Vo(Vin=1.18V) Vo(Vin=1.24V) Vo(Vin=1.30V) 9 Vo(Vin=5.0V) Vin=5.0V 8 7 6 Voltage (V) Voltage (V) 9.2.1.3 Application Curves 5 4 3 2 1 0 -1 -0.2 0 0.2 0.4 Time (ms) 0.6 -2 -0.4 0.8 -0.2 D001 Figure 27. Output Response With Small Overdrive Voltages 0 0.2 0.4 Time (ms) 0.6 0.8 D001 Figure 28. Output Response With Large Overdrive Voltage Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 21 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com 9.2.2 Shunt Regulator/Reference VSUP RSUP VO = ( 1 + R1 0.1% CATHODE REF Vr ef R1 ) Vref R2 R2 0.1% TL431 ANODE CL Figure 29. Shunt Regulator Schematic 9.2.2.1 Design Requirements For this design example, use the parameters listed in Table 2 as the input parameters. Table 2. Design Parameters DESIGN PARAMETER EXAMPLE VALUE Reference Initial Accuracy 1.0% Supply Voltage 6V Cathode Current (Ik) 1 mA Output Voltage Level 1.24 V - 6 V Load Capacitance 100 nF Feedback Resistor Values and Accuracy (R1 and R2) 10 kΩ 9.2.2.2 Detailed Design Procedure When using TLV431 as a Shunt Regulator, determine the following: • Input voltage range • Temperature range • Total accuracy • Cathode current • Reference initial accuracy • Output capacitance 9.2.2.2.1 Programming Output/Cathode Voltage To program the cathode voltage to a regulated voltage a resistive bridge must be shunted between the cathode and anode pins with the mid point tied to the reference pin. This can be seen in Figure 29, with R1 and R2 being the resistive bridge. The cathode/output voltage in the shunt regulator configuration can be approximated by the equation shown in Figure 29. The cathode voltage can be more accurately determined by taking the cathode current in to account VO = ( 1 + R1 / R2) × Vref – Iref × R1 (1) For Equation 1 to be valid, TLV431 must be fully biased so that it has enough open-loop gain to mitigate any gain error. This can be done by meeting the Imin spec denoted in Recommended Operating Conditions table. 22 Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 9.2.2.2.2 Total Accuracy When programming the output above unity gain (Vka = Vref), TLV431 is susceptible to other errors that may effect the overall accuracy beyond Vref. These errors include: • • • • R1 and R2 accuracies VI(dev) – Change in reference voltage over temperature ΔVref / ΔVKA – Change in reference voltage to the change in cathode voltage |zKA| – Dynamic impedance, causing a change in cathode voltage with cathode current Worst-case cathode voltage can be determined taking all of the variables in to account. Application note Setting the Shunt Voltage on an Adjustable Shunt Regulator (SLVA445) assists designers in setting the shunt voltage to achieve optimum accuracy for this device. 9.2.2.2.3 Stability Though TLV431 is stable with no capacitive load, the device that receives the shunt regulator's output voltage could present a capacitive load that is within the TLV431 region of stability, shown in Figure 18. Also, designers may use capacitive loads to improve the transient response or for power supply decoupling. Voltage (V) 9.2.2.3 Application Curve 6.5 6 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 -0.5 -1 Vsup Vka=Vref R1=10k: & R2=10k: 0 1 2 3 4 5 Time (Ps) 6 7 8 9 D001 Figure 30. TLV431 Start-Up Response Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 23 TLV431, TLV431A, TLV431B SLVS139X – JULY 1996 – REVISED MAY 2018 www.ti.com 10 Power Supply Recommendations When using TLV431 as a Linear Regulator to supply a load, designers will typically use a bypass capacitor on the output/cathode pin. When doing this, be sure that the capacitance is within the stability criteria shown in Figure 18. To not exceed the maximum cathode current, be sure that the supply voltage is current limited. Also, be sure to limit the current being driven into the Ref pin, as not to exceed the absolute maximum rating. For applications shunting high currents, pay attention to the cathode and anode trace lengths, adjusting the width of the traces to have the proper current density. 11 Layout 11.1 Layout Guidelines Place decoupling capacitors as close to the device as possible. Use appropriate widths for traces when shunting high currents to avoid excessive voltage drops. 11.2 Layout Example DBZ (TOP VIEW) Rref Vin REF 1 Rsup Vsup ANODE 3 CATHODE GND 2 CL GND Figure 31. DBZ Layout Example 24 Submit Documentation Feedback Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B TLV431, TLV431A, TLV431B www.ti.com SLVS139X – JULY 1996 – REVISED MAY 2018 12 Device and Documentation Support 12.1 Documentation Support 12.1.1 Related Documentation For related documentation, see the following: • Compensation Design With TL431 for UCC28600 (SLUA671) • Setting the Shunt Voltage on an Adjustable Shunt Regulator (SLVA445) 12.2 Related Links The table below lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to sample or buy. Table 3. Related Links PARTS PRODUCT FOLDER SAMPLE & BUY TECHNICAL DOCUMENTS TOOLS & SOFTWARE SUPPORT & COMMUNITY TLV431 Click here Click here Click here Click here Click here TLV431A Click here Click here Click here Click here Click here TLV431B Click here Click here Click here Click here Click here 12.3 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 12.4 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 12.5 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 12.6 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 12.7 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical packaging and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser based versions of this data sheet, refer to the left hand navigation. Copyright © 1996–2018, Texas Instruments Incorporated Product Folder Links: TLV431 TLV431A TLV431B Submit Documentation Feedback 25 PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) TLV431ACDBVR ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 (YAC6, YACC, YACI, YACN) (YACG, YACL, YACS) TLV431ACDBVRE4 ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 YACI Samples TLV431ACDBVRG4 ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 YACI Samples TLV431ACDBVT ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 (YAC6, YACC, YACI) Samples Samples (YACG, YACL, YACS) TLV431ACDBVTG4 ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU TLV431ACDBZR ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM 0 to 70 YACI Samples Level-1-260C-UNLIM 0 to 70 (YAC6, YAC8, YACB) Samples (YAC3, YACS, YACU) TLV431ACDBZRG4 ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAUAG Level-1-260C-UNLIM 0 to 70 YAC6 YACS Samples TLV431ACLP ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type 0 to 70 V431AC Samples TLV431ACLPE3 ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type 0 to 70 V431AC Samples TLV431ACLPR ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type 0 to 70 V431AC Samples TLV431AID ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TY431A Samples TLV431AIDBVR ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 85 (YAI6, YAIC, YAII, YAIN) (YAIG, YAIL, YAIS) TLV431AIDBVRE4 ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 YAII Samples TLV431AIDBVRG4 ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 YAII Samples TLV431AIDBVT ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 85 (YAI6, YAIC, YAII) Samples Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) (YAIG, YAIL, YAIS) TLV431AIDBVTG4 ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU TLV431AIDBZR ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM -40 to 85 YAII Samples Level-1-260C-UNLIM -40 to 85 (YAI6, YAI8, YAIB) Samples (YAI3, YAIS, YAIU) TLV431AIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAUAG Level-1-260C-UNLIM -40 to 85 YAI6 YAIS Samples TLV431AIDE4 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TY431A Samples TLV431AIDR ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TY431A Samples TLV431AIDRE4 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TY431A Samples TLV431AILP ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type -40 to 85 V431AI Samples TLV431AILPE3 ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type -40 to 85 V431AI Samples TLV431AILPM ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type -40 to 85 V431AI Samples TLV431AILPR ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type -40 to 85 V431AI Samples TLV431AILPRE3 ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type -40 to 85 V431AI Samples TLV431AQPK ACTIVE SOT-89 PK 3 1000 RoHS & Green SN Level-2-260C-1 YEAR -40 to 125 VA Samples TLV431AQPKG3 ACTIVE SOT-89 PK 3 1000 RoHS & Green SN Level-2-260C-1 YEAR -40 to 125 VA Samples TLV431BCDBVR ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM 0 to 70 (Y3GG, Y3GJ, Y3GU) Samples TLV431BCDBVRG4 ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 Y3GG Samples TLV431BCDBVT ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM 0 to 70 (Y3GG, Y3GJ, Y3GU) Samples TLV431BCDBVTG4 ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 Y3GG Samples TLV431BCDBZR ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM 0 to 70 (Y3G3, Y3GS, Y3GU) Samples Addendum-Page 2 PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material NIPDAUAG MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) TLV431BCDBZRG4 ACTIVE SOT-23 DBZ 3 3000 RoHS & Green Level-1-260C-UNLIM 0 to 70 (Y3G3, Y3GS, Y3GU) Samples TLV431BCDBZT ACTIVE SOT-23 DBZ 3 250 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM 0 to 70 (Y3GS, Y3GU) Samples TLV431BCDCKR ACTIVE SC70 DCK 6 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 YEU Samples TLV431BCDCKT ACTIVE SC70 DCK 6 250 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 YEU Samples TLV431BCLP ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type 0 to 70 TV431B Samples TLV431BCLPR ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type 0 to 70 TV431B Samples TLV431BCPK ACTIVE SOT-89 PK 3 1000 RoHS & Green SN Level-2-260C-1 YEAR 0 to 70 VE Samples TLV431BIDBVR ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 85 (Y3FJ, Y3FU) Samples TLV431BIDBVRG4 ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 (Y3FJ, Y3FU) Samples TLV431BIDBVT ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 85 (Y3FJ, Y3FU) Samples TLV431BIDBZR ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM -40 to 85 (Y3F3, Y3FS, Y3FU) Samples TLV431BIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM -40 to 85 (Y3F3, Y3FS) Samples TLV431BIDBZT ACTIVE SOT-23 DBZ 3 250 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM -40 to 85 (Y3FS, Y3FU) Samples TLV431BIDCKR ACTIVE SC70 DCK 6 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 YFU Samples TLV431BIDCKT ACTIVE SC70 DCK 6 250 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 YFU Samples TLV431BILP ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type -40 to 85 TY431B Samples TLV431BILPR ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type -40 to 85 TY431B Samples TLV431BILPRE3 ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type -40 to 85 TY431B Samples TLV431BIPK ACTIVE SOT-89 PK 3 1000 RoHS & Green SN Level-2-260C-1 YEAR -40 to 85 VF Samples TLV431BQDBVR ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 125 (Y3HJ, Y3HU) Samples TLV431BQDBVRE4 ACTIVE SOT-23 DBV 5 3000 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 (Y3HJ, Y3HU) Samples Addendum-Page 3 PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material NIPDAU | SN MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) TLV431BQDBVT ACTIVE SOT-23 DBV 5 250 RoHS & Green Level-1-260C-UNLIM -40 to 125 (Y3HJ, Y3HU) Samples TLV431BQDBZR ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM -40 to 125 (Y3H3, Y3HS, Y3HU) Samples TLV431BQDBZRG4 ACTIVE SOT-23 DBZ 3 3000 RoHS & Green Level-1-260C-UNLIM -40 to 125 Y3HS Samples TLV431BQDBZT ACTIVE SOT-23 DBZ 3 250 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM -40 to 125 (Y3HS, Y3HU) Samples TLV431BQDCKR ACTIVE SC70 DCK 6 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 YGU Samples TLV431BQDCKT ACTIVE SC70 DCK 6 250 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 125 YGU Samples TLV431BQLP ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type -40 to 125 TQ431B Samples TLV431BQLPR ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type -40 to 125 TQ431B Samples TLV431BQPK ACTIVE SOT-89 PK 3 1000 RoHS & Green SN Level-2-260C-1 YEAR -40 to 125 V6 Samples TLV431CDBVR ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM 0 to 70 (Y3C6, Y3CI) (Y3CG, Y3CS) Samples TLV431CDBVRG4 ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 Y3CI Samples TLV431CDBVT ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM 0 to 70 (Y3C6, Y3CI) (Y3CG, Y3CS) Samples TLV431CDBVTG4 ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 Y3CI Samples TLV431CDBZR ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM 0 to 70 (Y3C6, Y3C8, Y3CB) Samples NIPDAUAG (Y3C3, Y3CS, Y3CU) TLV431CDBZRG4 ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAUAG Level-1-260C-UNLIM 0 to 70 (Y3C6, Y3C8, Y3CB) Samples (Y3C3, Y3CS, Y3CU) TLV431CLP ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type 0 to 70 V431C Samples TLV431CLPE3 ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type 0 to 70 V431C Samples TLV431CLPR ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type 0 to 70 V431C Samples Addendum-Page 4 PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) TLV431IDBVR ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 85 (Y3I6, Y3II) (Y3IG, Y3IS) Samples TLV431IDBVRG4 ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 Y3II Samples TLV431IDBVT ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 85 (Y3I6, Y3II) (Y3IG, Y3IS) Samples TLV431IDBVTG4 ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 Y3II Samples TLV431IDBZR ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM -40 to 85 (Y3I6, Y3IB) (Y3IS, Y3IU) Samples TLV431IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 RoHS & Green NIPDAUAG Level-1-260C-UNLIM -40 to 85 Y3I6 Y3IS Samples TLV431ILP ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type -40 to 85 V431I Samples TLV431ILPE3 ACTIVE TO-92 LP 3 1000 RoHS & Green SN N / A for Pkg Type -40 to 85 V431I Samples TLV431ILPR ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type -40 to 85 V431I Samples TLV431QPK ACTIVE SOT-89 PK 3 1000 RoHS & Green SN Level-2-260C-1 YEAR -40 to 125 VB Samples TLV431QPKG3 ACTIVE SOT-89 PK 3 1000 RoHS & Green SN Level-2-260C-1 YEAR -40 to 125 VB Samples (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of