TS431IZT

TS431 Adjustable shunt voltage reference IC (automotive for SOT23-5) Datasheet - production data Description Z TO92 (plastic package) The TS431 is a low-voltage, three-terminal, adjustable shunt voltage reference. The output voltage can be set to any value between Vref (1.24 V) and 6 V using two external resistors. The TS431 is able to operate at a lower voltage (1.24 V) and lower cathode current than the widelyused TL431 and TL1431 shunt voltage reference. When driving an optocoupler, the TS431 is particularly suitable for regulating 3.3 V switching power supplies. L SOT23-5 (plastic micropackage) Features  AEC-Q100 qualified (SOT23-5)  Low voltage operation: 1.24 to 6 V  2%, 1% and 0.5% voltage precision  Wide operating range cathode current: 60 µA to 30 mA  Low output impedance: 0.2 Ω  Typically stable for any capacitive loads  ESD protection:  Human body model: 2 kV – Machine model: 200 V  100 ppm/°C temperature coefficient  Automotive grade version available June 2018 This is information on a product in full production. DocID5558 Rev 12 1/16 www.st.com Contents TS431 Contents 1 Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Definition of output voltage change over temperature range . . . . . . . . . . . . . . . . . 5 4 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.1 SOT23-5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 5.2 TO92 (tape ammopack and tape and reel) package information . . . . . . . 12 5.3 TO92 (bulk) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 DocID5558 Rev 12 TS431 1 Pinout Pinout Figure 1. Pinout Z TO92 (plastic package) Figure 2. Pinout L SOT23-5 (plastic micropackage) DocID5558 Rev 12 3/16 16 Absolute maximum ratings and operating conditions 2 TS431 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Symbol VKA Parameter Cathode to anode voltage Value Unit 10 V Ik Continuous cathode current range -20 to +40 mA Iref Reference input current range -0.05 to +3 mA Pd Power dissipation TO92 package SOT23-5 package 625 500 mW Tstg Storage temperature range -65 to +150 °C Value Unit 1.24 to 6 V 0.06 to 30 mA -40 to +125 °C Table 2. Operating conditions Symbol VKA Ik Toper Parameter Cathode to anode voltage Cathode current(1) Operating free air temperature range 1. Please refer to Section 4: Application information for more details. Table 3. Thermal data Symbol 4/16 Parameter TO-92 SOT23-5L Unit RthJC Thermal resistance junction to case 57 136 °C/W RthJA Thermal resistance junction to ambient 200 250 °C/W DocID5558 Rev 12 TS431 3 Electrical characteristics Electrical characteristics Table 4. Tamb = 25 °C (unless otherwise specified) Symbol Min. Typ. Max. Unit 1.215 1.228 1.234 1.240 1.240 1.240 1.265 1.252 1.246 V 0 < Tamb < +70 °C -40 < Tamb < +85 °C -40 < Tamb < +105 °C -40 < Tamb < +125 °C - - 9 16 18 21 mV Ratio of change in reference input voltage to change in cathode to anode voltage Ik = 10 mA VKA = 6 V to Vref - 1.8 2.7 mV/V Iref Reference input current Ik = 10 mA - 70 160 nA Iref Reference input current deviation over temperature range Ik = 10 mA, R1 = 10 k R2 =  -40 < Tamb < +85 °C -40 < Tamb < +125 °C - 70 90 160 240 nA Imin Minimum cathode current for regulation VKA = Vref - 40 60 A Ioff Off-state cathode current VKA = 6 V, Vref = 0 - 0.001 0.1 A Static impedance VKA = Vref, Ik = 0.1 to 15 mA - 0.2 0.4  Vref Vref Vref ---------------Vka RKA Parameter Output voltage VKA = Vref at Ik = 100 A Output voltage change Ik = 100 A, VKA = Vref (1) (2) Test conditions TS431 TS431A TS431B 1. Limits are 100% production tested at 25 °C. Behavior at the temperature range limits is guaranteed through correlation and by design. 2. See definition below. Definition of output voltage change over temperature range Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range. Vref = Vref max - Vref min Figure 3. Output voltage change over temperature range Vref max. Vref min. T1 T2 DocID5558 Rev 12 Temperature 5/16 16 Electrical characteristics TS431 Figure 4. Reference voltage vs. temperature Figure 5. Test circuit for VKA = Vref 1.252 Reference voltage (V) Input Vka = Vref Ik = 100 µA 1.248 Output Ik 1.244 1.24 Vka 1.236 Vref 1.232 1.228 -40 -20 0 20 40 60 80 100 120 Temperature (°C) Figure 6. Cathode voltage vs. cathode current Figure 7. Cathode voltage vs. cathode current 1.5 15 Ika Cathode current (mA) Vka Cathode voltage (V) Vka = Vref T = 25°C 10 5 0 -5 1 0.5 +25°C -40°C -10 0 -15 -1 -0.5 0 0.5 1 0 1.5 10 20 Figure 8. Reference input current vs. temperature 40 50 60 Figure 9. Static impedance vs. temperature 0.4 100 Ik = 10mA R1 = 10 K R2 = +  80 Rka Static Impedance (Ohms) Iref Reference current (nA) 30 Ika Cathode current (µA) Vka Cathode voltage (V) 60 40 20 0.3 Vka = Vref Ik = 100µA to 15mA 0.2 0.1 0 0 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 Temperature (°C) Temperature (°C) 6/16 +125°C +85°C DocID5558 Rev 12 80 100 120 TS431 Electrical characteristics Figure 10. Off-state current vs. temperature Figure 11. Test circuit for off-state current measurement 200 IOff Off-State current (nA) Input Vka=6V 150 Ioff 100 50 0 -40 -20 0 20 40 60 80 100 120 Temperature (°C) Ratio of change in reference input voltage (mV/V) Figure 12. Ratio of change in reference input voltage to change in VKA voltage vs. temperature 0 Figure 13. Test circuit for VKA > Vref Input Vka Ik -1 R1 Ik = 10mA Vka = 6V to Vref -2 Iref R2 Vref -3 -40 -20 0 20 40 60 80 100 120 Temperature (°C) Vka = Vref . (1+R1/R2) + Iref . R1 Figure 14. Phase and gain vs. frequency 60 Figure 15. Test circuit for phase and gain measurement 150 100 40 50 30 20 Gain 10 0 1E+3 1E+4 1E+5 10µF Output 6.8K Phase (°) 50 Phase margin # 50° Gain (dB) Phase 0 Ik=100µA 10µF -50 Input -100 4.3K Vref -150 1E+6 Frequency (Hz) DocID5558 Rev 12 7/16 16 Electrical characteristics TS431 Figure 16. Pulse response at Ik = 100 µA Input voltage 3 18K 2 Pulse Generator f=100KHz Output voltage Output Ik=100µA Intput input and output voltage (V) Figure 17. Test circuit for pulse response at Ik = 100 µA 50 1 0 0 1 2 3 4 5 6 7 8 9 10 Time (µs) Figure 18. Pulse response at Ik = 1 mA Figure 19. Test circuit for pulse response at Ik = 1 mA Input voltage 1.8K 2 Pulse Generator f=100KHz Output voltage 50 1 0 0 1 2 3 4 5 6 7 Time (µs) Figure 20. Equivalent input noise vs. frequency Equivalent input noise (nv/VHz) 250 200 150 Vka = Vref Ik = 100 µA T=25°C 100 50 0 0.1 1 10 Frequency (KHz) 8/16 DocID5558 Rev 12 100 1000 Output Ik=1mA Intput input and output voltage (V) 3 TS431 4 Application information Application information The TS431 is a general-purpose low-power adjustable shunt voltage reference, capable of operating with a cathode current as low as 60 µA and up to 30 mA. The main static parameters of the TS431 voltage reference are specified in Table 4 on page 5. Since the TS431 is designed for general-purpose applications with a broad range of cathode currents, voltages and loads, when designing with the device in applications requiring fast dynamic response (turn-on/off and/or pulsed load conditions) it should be considered that upon application of power, the time required for the VKA voltage to reach its final value within a specified error range depends on several factors, among which the temperature, cathode current and capacitive load inrush current are the most influential. The dynamic response of the device to fast turn-on/off, load and temperature changes is optimized when the cathode current is not in the lower end of the operating range (IK > 500 µA). DocID5558 Rev 12 9/16 16 Package information 5 TS431 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. 10/16 DocID5558 Rev 12 TS431 5.1 Package information SOT23-5 package information Figure 21. SOT23-5 package outline . Table 5. SOT23-5 package mechanical data Dimensions Symbol Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 0.90 - 1.45 0.035 - 0.057 A1 0.00 - 0.15 0.00 - 0.006 A2 0.90 - 1.30 0.035 - 0.051 b 0.35 - 0.50 0.014 - 0.02 C 0.09 - 0.20 0.003 - 0.008 D 2.80 - 3.00 0.110 - 0.118 H 2.60 - 3.00 0.102 - 0.118 E 1.50 - 1.75 0.059 - 0.069 e - 0.95 - - 0.037 - e1 - 1.9 - - 0.075 - L 0.35 - 0.55 0.014 - 0.022 DocID5558 Rev 12 11/16 16 Package information 5.2 TS431 TO92 (tape ammopack and tape and reel) package information Figure 22. TO92 (tape ammopack and tape and reel) package outline A1 P T P A H W2 W0 W L1 W1 H0 I1 H H1 d D0 F1 F2 P2 P0 Table 6. TO92 (tape ammopack and tape and reel) package mechanical data Dimensions (millimeters) Dimensions (Inches) Symbol Min. 12/16 Typ. Max. Min. Typ. Max. AL - - 5.0 - - 0.197 A - - 5.0 - - 0.197 T - - 4.0 - - 0.157 d - 0.45 - - 0.018 - I1 2.5 - - 0.098 - - P 11.7 12.7 13.7 0.461 0.500 0.539 PO 12.4 12.7 13 0.488 0.500 0.512 P2 5.95 6.35 6.75 0.234 0.250 0.266 F1/F2 2.4 2.5 2.8 0.094 0.098 0.110 h -1 0 1 -0.039 0 0.039 P -1 0 1 -0.039 0 0.039 W 17.5 18.0 19.0 0.689 0.709 0.748 W0 5.7 6 6.3 0.224 0.236 0.248 W1 8.5 9 9.75 0.335 0.354 0.384 W2 - - 0.5 - - 0.020 H - - 20 - - 0.787 H0 15.5 16 16.5 0.610 0.630 0.650 H1 - - 25 - - 0.984 DO 3.8 4.0 4.2 0.150 0.157 0.165 L1 - - 11 - - 0.433 DocID5558 Rev 12 TS431 5.3 Package information TO92 (bulk) package information Figure 23. TO92 (bulk) package outline Table 7. TO92 (bulk) package mechanical data Dimensions Symbol Millimeters Inches Min. Typ. Max. Min. Typ. Max. L - 1.27 - - 0.05 - B 3.2 3.7 4.2 0.126 0.1457 0.1654 O1 4.45 5.00 5.2 0.1752 0.1969 0.2047 C 4.58 5.03 5.33 0.1803 0.198 0.2098 K 12.7 - - 0.5 - - O2 0.407 0.5 0.508 0.016 0.0197 0.02 a 0.35 - - 0.0138 - - DocID5558 Rev 12 13/16 16 Ordering information 6 TS431 Ordering information Table 8. Order codes Order codes Precision TS431ILT 2% TS431AILT 1% TS431BILT 0.5% TS431IYLT(1) Temp. range Packages 1% TS431BIYLT(1) 0.5% TS431IZ/IZT/IZ-AP 2% TS431AIZ/AIZT/AIZ-AP 1% TS431BIZ/BIZT/BIZ-AP 0.5% Marking L272 SOT23-5 L271 Tape and reel 2% TS431AIYLT(1) Packing SOT23-5 -40 °C, + 125 °C (automotive grade level) L270 L274 L276 L273 TO92 TS431I Bulk (Z), tape and reel (ZT) TS431AI or ammopack (AP) TS431BI 1. Qualification and characterization according to AEC-Q100 and AEC-Q003 or equivalent, advanced screening according to AEC-Q001 and AEC-Q002 or equivalent. 14/16 DocID5558 Rev 12 TS431 7 Revision history Revision history Table 9. Document revision history Date Revision Changes 1-Sep-2003 1 Initial release. 1-Oct-2005 2 PPAP references inserted in the datasheet. See the order codes table. Minor changes to formatting and grammar. 2-Jan-2006 3 TS431AIYLT PPAP reference inserted. See the order codes table. 22-Sep-2006 4 Included footnote on automotive grade qualification to order codes table. Updated package information (changed mils to inches). 25-Apr-2007 5 Resized graphics on cover page. Moved definition of output voltage change from Table 3 footnote to separate section below table. Corrected errors in SOT23-5 package mechanical data. Removed erroneous drawing for TO92 tape & reel package. 30-Aug-2007 6 Updated drawing for TO92 bulk package. Modified footnote related to automotive grade qualification in Table 5: Order codes, and re-ordered order codes. 27-Aug-2010 7 Modified note for package SOT23-5 on page 1. 15-Nov-2012 8 Modified note 1 Table 5 on page 12. 17-Dec-2012 9 Added note 1 Table 2 on page 2 and Section 3 on page 7. 12-Mar-2013 10 Added features Automotive grade version available in cover page. 30-Nov-2017 11 Added automotive qualification for SOT23-5 in the whole document. Updated main title on page 1. Added Section 1: Pinout on page 3. Updated Table 1 on page 4 (removed note 1). Added Table 3 on page 4. Minor modifications throughout document. 27-Jun-2018 12 Added precision value in Table 8: Order codes. DocID5558 Rev 12 15/16 16 TS431 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. 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