TS2431ILT

TS2431 Adjustable shunt voltage reference Datasheet - production data   Industrial temperature range: - 40 to + 105 °C Performance compatible with industrystandard TL431 Applications      Computers Instrumentation Battery chargers Switch mode power supplies Battery-operated equipment Description Features    Adjustable output voltage: 2.5 to 24 V Precision selection at 25 °C: ± 2%, ± 1% and ± 0.5% Sink current capability: 1 to 100 mA The TS2431 is an adjustable shunt voltage reference with guaranteed temperature stability over the entire temperature range of operations from - 40 to + 105 °C. The output voltage may be set to any value between 2.5 and 24 V with an external resistor bridge. Available in an SOT233L surface mount package, the device can be implemented for those applications where spacesaving is of the utmost importance. Table 1: Device summary Order code Temperature range Package Packing TS2431ILT TS2431AILT -40 to + 105 °C SOT23-3L TS2431BILT October 2017 DocID7961 Rev 6 This is information on a product in full production. Tape and reel Precision Marking 2% L285 1% L286 0.5% L287 1/16 www.st.com Contents TS2431 Contents 1 Absolute maximum ratings and operating conditions ................. 3 2 Electrical characteristics ................................................................ 4 3 Package information ....................................................................... 9 3.1 4 2/16 SOT23-3L package information ........................................................ 9 Revision history ............................................................................ 15 DocID7961 Rev 6 TS2431 1 Absolute maximum ratings and operating conditions Absolute maximum ratings and operating conditions Table 2: Absolute maximum ratings Symbol Vka IK IREF Parameter Cathode to anode voltage Reverse breakdown current Reference input current range dissipation(1) Pd Power Tstd Storage temperature ESD TLEAD Human body model Machine model SOT23-3L (HBM)(2) (MM)(3) Lead temperature (soldering, 10 s) Value Unit 25 V -100 to +150 mA 0.05 to +10 mA 360 mW -65 to +150 °C 2 kV 200 V 260 °C Notes: (1)Pd has been calculated with Tamb = 25 °C, Tjunction = 150 °C, Rthjc = 110 °C/W and Rthja = 340 °C/W for the SOT23-3 package. (2)Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins float. (3)Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 Ω). This is applied for all couples of connected pin combinations while the other pins float. Table 3: Operating conditions Symbol VKA IK Toper Parameter Cathode to anode voltage Cathode operating current(1) Operating free air temperature range Value Unit VREF to 24 V 1 to 100 mA - 40 to + 105 °C Notes: (1)Maximum power dissipation must be strictly observed to avoid damaging the component. DocID7961 Rev 6 3/16 Electrical characteristics 2 TS2431 Electrical characteristics Symbol Parameter Test conditions Min. VK = VREF, IK = 10 mA VREF |ΔVREF| Reference input voltage deviation over temperature VK = VREF, IK = 10 mA(1)(2) Temperature coefficient(2) TC Minimum operating current IKMIN Δ𝑉𝑟𝑒𝑓 | Reference input voltage Δ𝑉𝐾 | Ratio of change in reference input voltage to change in cathode-toanode voltage Typ. Max. Unit 2.5 TS2431 (2%) 2.45 2.55 TS2431A (1%) 2.475 2.525 TS2431B (0.5%) 2.488 2.512 TS2431B (1%), IK = 1 mA 2.475 2.525 0 °C < T < + 70 °C 10 20 -40 °C < T < + 85 °C 17 30 -40 °C < T < + 105 °C 20 35 -40 °C < T < + 105 °C 50 100 T = 25 °C 0.3 0.8 V mV ppm/°C mA -40 °C < T < +105 °C 1 IK = 10 mA Vka = 24 to 2.5 V 0.3 2 mV/V T = 25 °C 0.5 2.5 µA IREF Reference input current IK= 10 mA, R1 = 10 kΩ, R2 = + ∞(3) |ΔIREF| Reference input current deviation IK = 10 mA, R1 = 10 kΩ, R2 = + ∞(3) -40 °C < T < +105 °C 0.4 1.2 µA IOFF Off-state cathode current VK = 24 V, VREF = GND 10 500 nA |ZKA| Reverse dynamic impedance VK = VREF, ΔIK = 1 to 50 mA, f < 10 kHz 0.5 0.75 Ω Wide band noise IK = 10 mA 10 Hz < f < 10 kHz 300 EN -40 °C < T < +105 °C 3 nV/√Hz Notes: (1)Limits are 100 % production tested at 25 °C. Overtemperature limits are guaranteed through correlation and by design. (2)|ΔV REF| is defined as the difference between the maximum and minimum values of V REF obtained over the full temperature range. (3)Refer 4/16 to Figure 4: "Test circuit for Vka = Vref". DocID7961 Rev 6 TS2431 Electrical characteristics Figure 1: Reference voltage vs temperature Figure 2: Cathode voltage vs cathode current Figure 3: Reference input current vs temperature Figure 4: Test circuit for Vka = Vref Figure 5: Cathode voltage vs cathode current Figure 6: Dynamic impedance vs frequency DocID7961 Rev 6 5/16 Electrical characteristics 6/16 TS2431 Figure 7: Off-state current vs temper Figure 8: Ratio of change in reference input voltage to change in Vka voltage vs temperature Figure 9: Phase and gain vs frequency Figure 10: Test circuit for off-state current measurement DocID7961 Rev 6 TS2431 Electrical characteristics Figure 11: Test circuit for Vka > Vref Figure 12: Test circuit for phase and gain measurement Figure 13: Pulse response at Ik = 0 to 1 mA Figure 14: Pulse response at Ik = 1 to 0 mA Figure 15: Stability boundary conditions Figure 16: Test circuit for pulse response at Ik = 1 mA DocID7961 Rev 6 7/16 Electrical characteristics TS2431 Figure 17: Equivalent input noise vs frequency 8/16 DocID7961 Rev 6 Figure 18: Block diagram TS2431 3 Package information 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. 3.1 SOT23-3L package information Figure 19: SOT23-3L (Nantong Fujitsu) package outline DocID7961 Rev 6 9/16 Package information TS2431 Table 4: SOT23-3L (Nantong Fujitsu) mechanical data mm Dim. Min. Typ. A 10/16 Max. 1.25 A1 0 0.15 A2 1 1.10 1.20 A3 0.60 0.65 0.70 b 0.36 b1 0.36 c 0.14 c1 0.14 0.15 0.16 D 2.826 2.926 3.026 E 2.60 2.80 3.00 E1 1.526 1.626 1.726 e 0.90 0.95 1.00 e1 1.80 1.90 2.00 L 0.35 0.45 0.60 0.50 0.38 0.20 L1 0.59 REF L2 0.25 BSC R 0.05 R1 0.05 θ 0° θ1 3° θ2 6° DocID7961 Rev 6 0.45 8° 5° 7° 14° TS2431 Package information Figure 20: SOT23-3L (Carsem) package outline DocID7961 Rev 6 11/16 Package information TS2431 Figure 21: SOT23-3L (Carsem) package section views 12/16 DocID7961 Rev 6 TS2431 Package information Table 5: SOT23-3L (Carsem) mechanical data Dimensions Millimeters Ref. Min. Typ. Max. A 0.89 - 1.12 A1 0.013 - 0.10 A2 0.88 0.95 1.02 b 0.37 - 0.50 b1 0.37 0.40 0.45 c 0.085 - 0.18 c1 0.085 - 0.16 D 2.80 2.90 3.04 E 2.10 - 2.64 E1 1.20 1.30 1.40 e 0.95 BSC e1 1.90 BSC *L 0.28 0.38 L1 0.48 0.55 REF L2 R 0.05 R1 0.05 θ 0º s 0.45 8º - DocID7961 Rev 6 0.60 13/16 Package information TS2431 Figure 22: SOT23-3L recommended footprint 14/16 DocID7961 Rev 6 TS2431 4 Revision history Revision history Table 6: Document revision history Date Revision Changes 01-Feb-2002 1 Initial release. 10-Sep-2009 2 Updated document format. Modified footnote 1 under Table 2: Absolute maximum ratings on page 3. Added HBM and MM notes under Table 2. 11-May-2012 3 Removed: automotive grade order codes Table 1 on page 1. 22-Nov-2012 4 Added min. and max. values test condition TS2431B (1%), IK = 1 mA Table 4 on page 4. 28-Nov-2016 5 Updated Section 3: "Package information". Minor text changes. 20-Oct-2017 6 Updated the title and the description in cover page. Minor text changes. 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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. © 2017 STMicroelectronics – All rights reserved 16/16 DocID7961 Rev 6