TS3431ILT

TS3431 Datasheet 1.24 V adjustable shunt voltage reference Features 3 2 1 SOT23-3L (Plastic micropackage) 1 TS3431 Reference Cathode • • • • • Adjustable output voltage: 1.24 to 24 V Several precision levels @ 25 °C ± 2%, ± 1%, ± 0.5% and ± 0.25% Sink current capability: 0.4 to 100 mA Industrial temperature range: - 40 °C to + 105 °C Performance compatible with industry standard TL431 Applications 3 Anode 2 SOT23-3L (top view) • • • • • Computers Instrumentation Battery chargers Switch mode power supply Battery operated equipment Description The TS3431 is an adjustable shunt voltage reference with guaranteed temperature stability over the entire operating temperature range (- 40 °C to + 125 °C). The output voltage can be set to any value between 1.24 V and 24 V with an external resistor bridge. Maturity status link Available in SOT23-3 surface mount package, it can be used in application designs where space saving is critical. TS3431 DS3673 - Rev 7 - May 2019 For further information contact your local STMicroelectronics sales office. www.st.com TS3431 Diagram 1 Diagram Figure 1. Block diagram Cathode Reference + - VREF Anode DS3673 - Rev 7 page 2/18 TS3431 Maximum ratings 2 Maximum ratings Table 1. Absolute maximum ratings Symbol Vka IK IREF Parameter Value Unit 25 V -100 to +150 mA 0.05 to +10 mA 360 mW -65 to +150 °C 2 kV Machine model (MM) 200 V Lead temperature (soldering, 10 seconds) 250 °C Value Unit Cathode to anode voltage Reverse breakdown current Reference input current range Pd Power dissipation SOT23-3L Tstg Storage temperature ESD TLEAD (1). Human body model (HBM) 1. Pd is calculated with Tamb = 25 °C, Tj = 150 °C, Rthjc = 110 °C/W, Rthja = 340 °C/W Table 2. Operating conditions Symbol IK Cathode operating current 0.5 to 100 mA VK Cathode operating voltage 1.24 to 24 V - 40 to + 105 °C Toper DS3673 - Rev 7 Parameter Operating free air temperature range page 3/18 TS3431 Electrical characteristics 3 Electrical characteristics Limits are 100% production tested at 25 °C. Behavior at the temperature range limits is guaranteed through correlation and by design. Tamb = 25 °C (unless otherwise specified). Table 3. Electrical characteristics Symbol VK ΔVK TC IKmin Parameter Reference input voltage IK = 10 mA, VKA = Vref Variation of reference input voltage over temperature, Vka = Vref Temperature coefficient Minimum operating current Test conditions Min. Typ. Max. TS3431 (2%) 1.215 1.265 TS3431A (1%) 1.228 TS3431B (0.5%) 1.234 TS3431C (0.25%) 1.237 IREF ΔIREF IOFF DS3673 - Rev 7 Ratio of change in reference input voltage to change in cathode to anode voltage 1.252 1.246 10 -40 °C < T < +105 °C 18 -40 °C < T < +125 °C 21 -40 °C < T < +125 °C 100 T = 25 °C 0.35 -40 °C < T < +125 °C VK = 24 to 1.24 V 0.4 0.5 1.2 -40 °C < T < +125 °C 1.5 T = 25 °C IK = 10 mA, R1 = 10 kΩ, R2 = + ∞ -40 °C < T < +125 °C Reference input current deviation 0 °C < T < +70 °C 0.5 1 IK = 10 mA, R1 = 10 kΩ, R2 = + ∞ -40 °C < T < +125 °C 0.9 1.5 T=25 °C 35 500 RKA Reverse static impedance EN Wideband noise 1.5 2.0 2.5 -40°C < T < +105 °C 1000 -40°C < T < +125 °C 2000 IK = 1 to 100 mA IK = 10 mA 1 kHz < f < 100 kHz mV ppm/°C mA mV/V 2 Reference input current Off-state cathode current VK = 24 V V 1.243 0 °C < T < +70 °C IK = 10 mA ΔVref ΔVka 1.24 Unit 0.2 100 0.4 µA µA nA Ω nV/√Hz page 4/18 TS3431 Performance characteristics 3.1 Performance characteristics Figure 3. Test circuit for VK = Vref Figure 2. Reference voltage vs. temperature Voltage Reference (V) 1.250 Input Output 1.245 Ik IK = 10mA VK = VREF 1.240 Vka 1.235 Vref 1.230 -40 0 40 80 120 Temperature (°C) Figure 4. Cathode voltage vs. cathode current Figure 5. Minimum operating current vs. temperature IKMIN (mA) T=-40°C 1.0 0.5 0.0 0.0 T=+25°C 0.1 T=+125°C 0.2 Cathode current IK (mA) DS3673 - Rev 7 Minimum operating current Cathode voltage VK (V) 1.5 0.3 0.4 0.5 0.4 0.3 VK = VREF 0.2 0.1 0.0 -40 0 40 80 120 Temperature (°C) page 5/18 TS3431 Performance characteristics Figure 6. Reference input current vs. temperature Figure 7. Dynamic impedance vs. frequency Dynamic impedance ZKA (Ω) 0.5 Reference current IREF (µA) 1.00 0.75 0.50 VK = VREF 0.4 T=+25°C 0.3 0.2 0.1 0.25 0.0 10 0.00 -40 0 40 80 120 100 1000 10000 Frequency (Hz) Temperature (°C) Figure 8. Off-state current vs. temperature Vka = 24V 300 OFF State Current IOFF (nA) Figure 9. Test circuit for off-state current measurement Ioff 200 100 0 -40 0 40 80 120 Temperature (°C) DS3673 - Rev 7 page 6/18 TS3431 Performance characteristics Figure 10. Ratio of change in reference input voltage to change in VKA voltage vs. temperature Figure 11. Test circuit for VK > VREF 2.0 ∆VREF / ∆VK (mV/V) 1.5 1.0 ∆VK = 1.24 to 24V IK = 10 mA 0.5 0.0 -40 0 40 80 120 AMG010920161408MT Te mperature (°C) Figure 12. Pulse response at IK = 1 mA Figure 13. Test circuit for pulse response at IK = 10 mA 5.0 T=+25°C Input Voltage 2.7 KΩ IK =1 mA 0 Output voltage Output 4V 2.5 Intput Voltage (V) ... ... 0.0 0 2 4 6 8 Time (µs) Figure 14. Pulse response at IK = 10 mA Figure 15. Test circuit for pulse response at IK = 10 mA 5.0 Input Voltage T=+25°C ... 270 Ω Output voltage 0 Output 4V 2.5 Intput Voltage (V) IK =10 mA ... 0.0 0 2 4 6 8 Time (µs) DS3673 - Rev 7 page 7/18 TS3431 Performance characteristics Figure 16. Phase and gain vs. frequency Figure 17. Equivalent input noise vs. frequency 300 0 40 Gain (dB) VK = VREF IK = 10 mA T = +25°C 40 Noise (nV / √ Hz) Phase (°) 80 T = +25°C 200 100 20 0 1000 10000 100000 0 0.1 1000000 1 10 100 1000 10000 Frequency (kHz) Frequency (Hz) Figure 18. Test circuit for phase and gain measurement DS3673 - Rev 7 Output 4.3 K Ω Intput 10 µF I K = 10 mA 6.8 K Ω 10 µF page 8/18 TS3431 Package information 4 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. DS3673 - Rev 7 page 9/18 TS3431 SOT23-3L package information 4.1 SOT23-3L package information Figure 19. SOT23-3L package outline TOP VIEW 7110469 rev 4.0 DS3673 - Rev 7 page 10/18 TS3431 SOT23-3L package information Table 4. SOT23-3L package mechanical data Ref. Dimensions Min. Typ. Max. A 0.89 1.12 A1 0.013 0.10 A2 0.88 b 0.37 b1 0.37 c 0.085 0.18 (2) c1 0.085 0.16 D 2.80 E 2.10 E1 1.20 e *L 1.02 0.50 (1) 0.40 2.90 0.45 (1) 3.04 (3) 3.04 1.30 1.40 (3) 0.95BSC e1 (4) 0.95 1.90BSC 0.28 L1 0.38 0.48 0.55REF R 0.05 R1 0.05 Ɵ 0° 8° s 0.45 0.60 1. These dimensions apply to the flat section of the lead between 0.08 mm and 0.15 mm from the lead tip. 2. The max. value of "c" (terminal thickness) increases to 0.19 mm when Cu base leads are electroplated with Sn or SnPb. 3. Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.25 mm per side. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25 mm per side. 4. All dimensions comply with JEDEC T0-236-AB unless otherwise marked with designator " * ". Note: DS3673 - Rev 7 Standard for thermally enhanced plastic small outline transistor. Dimension and tolerance conform to ASME Y14.5M-1994. All dimensions are in millimeters. All angles are in degrees. page 11/18 TS3431 SOT23-3L package information Figure 20. SOT23-3L recommended footprint DS3673 - Rev 7 page 12/18 TS3431 Device summary 5 Device summary Table 5. Order code Order code Temperature range Package Packing TS3431ILT TS3431AILT TS3431BILT TS3431CILT DS3673 - Rev 7 Marking L280 -40 to + 105 °C SOT23-3L Tape and reel L281 L282 L283 page 13/18 TS3431 Revision history Table 6. Document revision history Date Revision 1-Jan-2004 1 Changes Initial release. Specific content changes as follows: 1-Dec-2004 2 – CI version added in Table 5: Order code. – Rthjc information added in Table 1: Absolute maximum ratings (AMR). – Test condition added in electrical characteristics Table 3. DS3673 - Rev 7 Removed TO-92 package information and associated order codes. 26-Jun-2007 3 30-Aug-2012 4 04-Dec-2017 5 27-Jun-2018 6 Updated: Figure 10. Ratio of change in reference input voltage to change in VKA voltage vs. temperature and Figure 11. Test circuit for VK > VREF. 29-May-2019 7 Updated: IREF values in Section 3 Electrical characteristics. Re-ordered electrical characteristics figures. Added: Vka = Vref parameter in Table 3 on page 5. Updated the title and Section 4.1: SOT23-3L package information. Minor text changes. page 14/18 TS3431 Contents Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.1 4 Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.1 5 Performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SOT23-3L package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 DS3673 - Rev 7 page 15/18 TS3431 List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Absolute maximum ratings . . . . . . . Operating conditions . . . . . . . . . . . Electrical characteristics . . . . . . . . . SOT23-3L package mechanical data Order code . . . . . . . . . . . . . . . . . . Document revision history . . . . . . . . DS3673 - Rev 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 . 3 . 4 11 13 14 page 16/18 TS3431 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. DS3673 - Rev 7 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reference voltage vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test circuit for VK = Vref . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cathode voltage vs. cathode current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Minimum operating current vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reference input current vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dynamic impedance vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Off-state current vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test circuit for off-state current measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ratio of change in reference input voltage to change in VKA voltage vs. temperature . Test circuit for VK > VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pulse response at IK = 1 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test circuit for pulse response at IK = 10 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pulse response at IK = 10 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test circuit for pulse response at IK = 10 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Phase and gain vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equivalent input noise vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test circuit for phase and gain measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . SOT23-3L package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SOT23-3L recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . 5 . 5 . 5 . 5 . 6 . 6 . 6 . 6 . 7 . 7 . 7 . 7 . 7 . 7 . 8 . 8 . 8 10 12 page 17/18 TS3431 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. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2019 STMicroelectronics – All rights reserved DS3673 - Rev 7 page 18/18