TS2431EILT

TS2431 Programmable shunt voltage reference Datasheet − production data 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 ■ Industrial temperature range: - 40 to +105 °C ■ Performances compatible with industrystandard TL431 SOT23-3L (plastic micropackage) Pin connections (top view) Applications 1 TS2431 Cathode ■ Computers ■ Instrumentation ■ Battery chargers ■ Switch mode power supplies ■ Battery-operated equipment Reference 3 Anode 2 Description The TS2431 is a programmable shunt voltage reference with guaranteed temperature stability over the entire temperature range of operation - 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 a SOT23-3L surface mount package, the device can be implemented in applications where space-saving is of utmost importance. Table 1. Device summary Order codes Temperature range Package Packing TS2431ILT TS2431AILT -40 to +105°C SOT23-3L Tape and reel TS2431BILT November 2012 This is information on a product in full production. Doc ID 7961 Rev 4 Precision Marking 2% L285 1% L286 0.5% L287 1/11 www.st.com 11 Contents TS2431 Contents 1 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1 4 2/11 SOT23-3L package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Doc ID 7961 Rev 4 TS2431 1 Absolute maximum ratings and operating conditions Absolute maximum ratings and operating conditions Table 2. Absolute maximum ratings Symbol Vka IK IREF Parameter Value Unit 25 V Reverse breakdown current -100 to +150 mA Reference input current range -0.05 to +10 mA 360 mW -65 to +150 °C 2 kV 200 V 260 °C Cathode to anode voltage Pd Power dissipation (1) SOT23-3L Tstd Storage temperature Human body model (HBM) ESD Machine model (MM) TLEAD (2) (3) Lead temperature (soldering, 10 seconds) 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 are floating. 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 done for all couples of connected pin combinations while the other pins are floating. Table 3. Symbol VKA IK Toper Operating conditions 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 1. Maximum power dissipation must be strictly observed to avoid damaging the component. Doc ID 7961 Rev 4 3/11 Electrical characteristics TS2431 2 Electrical characteristics Table 4. Electrical characteristics (Tamb = 25 °C unless otherwise specified) Symbol Parameter Test condition Min. VK = VREF, IK = 10 mA VREF |ΔVREF| TC Reference input voltage Temperature coefficient Max. 2.45 2.55 TS2431A (1%) 2.475 2.525 TS2431B (0.5%) 2.488 2.512 TS2431B (1%), IK=1mA 2.475 2.525 10 20 17 30 20 35 -40 °C < T < +105 °C 50 100 T = 25 °C 0.3 0.8 IKMIN Minimum operating current ΔVref ---------------ΔVk Ratio of change in reference input I = 10 mA voltage to change in cathode to anode K Vka = 24 to 2.5 V voltage Unit 2.5 TS2431 (2%) 0 °C < T < +70 °C Reference input voltage deviation over -40 °C < T < +85 °C temperature VK = VREF, IK = 10 mA (1) (2) -40 °C < T < +105 °C (2) Typ. V mV ppm/°C mA -40 °C < T < +105 °C T = 25 °C 1 0.3 2 0.5 2.5 mV/V 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 W Wide band noise IK = 10 mA 10 Hz < f < 10 kHz 300 EN µA -40 °C < T < +105 °C 3 nV/√Hz 1. Limits are 100% production tested at 25° C. Limits over temperature are guaranteed through correlation and by design. 2. |ΔVREF| is defined as the difference between the maximum and minimum values of V REF obtained over the full temperature range. 3. Refer to Figure 4: Test circuit for Vka = Vref on page 5. 4/11 Doc ID 7961 Rev 4 TS2431 Electrical characteristics Figure 1. Reference voltage vs. temperature Figure 2. Cathode voltage vs. cathode current 3 Vka Cathode voltage (V) Voltage reference (V) 2.52 Ik =10 mA Vka = Vref 2.51 2.50 2.49 2.48 2 Vka = Vref T=25°C 1 0 -1 -40 -20 0 20 40 60 80 100 -0.10 -0.05 Temperature (°C) Figure 3. 0.00 0.05 0.10 Ika Cathode current (A) Reference input current vs. temperature Figure 4. Test circuit for Vka = Vref Reference input current (µA) 1.00 Input Ik=10mA R1=10KΩ R2=+∞ 0.75 Output Ik 0.50 Vka 0.25 Vref 0.00 -40 -20 0 20 40 60 80 100 Temperature (°C) Cathode voltage vs. cathode current Figure 6. Zka Dynamic impedance (Ohms) Figure 5. Vka Cathode voltage (V) 3 T=-40°C 2 T=+25°C 1 T=+105°C 0 0 100 Vka = Vref 200 300 Dynamic impedance vs. frequency 5 4 Vka=Vref Ik=1mA T=25°C 3 2 1 400 Ik Cathode current (µA) 0 10 100 1000 10000 100000 1000000 Frequency (Hz) Doc ID 7961 Rev 4 5/11 Electrical characteristics Figure 7. TS2431 Off-state current vs. temperature Figure 8. 0.4 ΔVref / ΔVka (mV/V) 0.3 Off-state current (µA) Ratio of change in reference input voltage to change in Vka voltage vs. temperature 0.2 0.1 0.3 ΔVka=24 to 2.5V Ik=10mA T=25°C 0.2 0.1 0.0 -40 -20 0 20 40 60 80 0.0 -40 100 Temperature (°C) Figure 9. -20 0 20 40 60 80 100 Temperature (°C) Phase and gain vs. frequency Figure 10. Test circuit for off-state current measurement Vka=24V Ioff Figure 11. Test circuit for Vka > Vref Input Figure 12. Test circuit for phase and gain measurement Vka Ik R1 Iref R2 Vref Vka = Vref . (1+R1/R2) + Iref . R1 6/11 Doc ID 7961 Rev 4 TS2431 Electrical characteristics Figure 13. Pulse response at Ik = 0 to 1 mA Figure 14. Pulse response at Ik = 1 to 0 mA 6 6 Input voltage 4 Voltage (V) Voltage (V) Input voltage Output voltage 2 4 Ik= 1mA to 0 T=25°C 2 Output voltage Ik= 0 to 1mA T=25°C 0 0.0 0.5 1.0 1.5 0 0.0 2.0 0.5 Time (µs) 1.0 1.5 2.0 Time (µs) Figure 15. Stability boundary conditions Figure 16. Test circuit for pulse response at Ik = 1 mA 80 Stable area 2.5 KΩ Ik=1mA Pulse Generator F=100kHz 0 to 5V Vka=3 V 40 20 0 1E-10 Instable area Vka=2.5 V 1E-9 1E-8 1E-7 Output 60 Intput Cathode current (mA) 100 Vka=5 V 1E-6 1E-5 Capacitive load (F) Figure 17. Equivalent input noise vs. frequency Figure 18. Block diagram 300 Noise (nV / √ Hz) 250 200 150 Vka=Vref Ik=1mA T=25°C 100 50 0 0.1 1 10 100 1000 Frequency (KHz) Doc ID 7961 Rev 4 7/11 Package mechanical data 3 TS2431 Package mechanical data 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. 8/11 Doc ID 7961 Rev 4 TS2431 3.1 Package mechanical data SOT23-3L package information Figure 19. SOT23-3L package mechanical drawing Table 5. SOT23-3L package mechanical data Dimensions Millimeters Inches Ref. Min. Typ. Max. Min. Typ. Max. A 0.89 1.12 0.035 0.044 A1 0.01 0.10 0.0004 0.004 A2 0.88 1.02 0.035 b 0.30 0.50 0.012 0.020 c 0.08 0.20 0.003 0.008 D 2.80 3.04 0.110 E 2.10 2.64 0.083 E1 1.20 1.40 0.047 0.95 2.90 1.30 0.037 0.114 0.051 0.95 0.037 e1 1.90 0.075 0.40 L1 k 0.50 0.60 0.54 0d 0.016 0.120 0.104 e L 0.040 0.020 0.055 0.024 0.021 8d Doc ID 7961 Rev 4 9/11 Revision history 4 TS2431 Revision history Table 6. 10/11 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. Doc ID 7961 Rev 4 TS2431 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY TWO AUTHORIZED ST REPRESENTATIVES, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2012 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com Doc ID 7961 Rev 4 11/11 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: STMicroelectronics: TS2431EILT