TL1431 STMicroelectronics, TL1431 Datasheet
TL1431
Specifications of TL1431
Available stocks
Related parts for TL1431
TL1431 Summary of contents
Page 1
... The output voltage may be set to any value between 2.5 V and 36 V with two external resistors. The TL1431 operates with a wide current range from 1 to 100 mA with a typical dynamic impedance of 0.2 Ω. March 2008 Programmable voltage reference ...
Page 2
... Schematic diagrams 1 Schematic diagrams Figure 1. TO92 pin connections (top view) Figure 2. SO-8 pin connections (top view) Figure 3. TL1431 block diagram 2/16 Cathode Anode Reference Cathode Cathode Vref Vref + + - - Vref Vref Anode Anode TL1431 Cathode 2 - Anode 3 - Anode Anode ...
Page 3
... This is done for all pins. Table 2. Operating conditions Symbol V Cathode to anode voltage KA I Cathode current k Operating free-air temperature range T TL1431C/AC oper TL1431I/AI Thermal resistance junction to ambient R SO-8 batwing thja TO92 Absolute maximum ratings and operating conditions Parameter (1) (2) (3) (4) =+150°C and T =+25°C with relative R ...
Page 4
... Figure 4 Figure 6 in Section 4: Parameter definitions on page in Section 4: Parameter definitions on page 9. TL1431C TL1431AC Typ. Max. Min. Typ. Max ±13 ±90 ±13 ±90 -1.1 -2 -1.1 1.5 2.5 1.5 2.5 3 0.2 1.2 0.2 1.2 0.5 1 0.5 0.6 180 500 180 500 0.2 0.5 0.2 0 TL1431 Unit V mV ppm/°C mV/V µA 3 µ Ω ...
Page 5
... T ≤ T min amb max -2 ≤ T ≤ T min amb max Figure 6 in Section 4: Parameter definitions on page in Section 4: Parameter definitions on page 9. Electrical characteristics TL1431I TL1431AI Typ. Max. Min. Typ. Max ±22 ±100 ±22 ±100 ppm/°C -1.1 -2 -1.1 1.5 2.5 1.5 2 ...
Page 6
... REF R2 V REF ( ) ------- - + REF REF R2 Test circuit for phase margin and voltage gain I =10mA K 10μF V REF Reference voltage vs. temperature I = See figure 1 -40 - Temperature (°C) TL1431 Output V KA 10μF =2.5 V REF 100 120 ...
Page 7
... TL1431 Figure 10. Reference voltage vs. cathode current -40 - Cathode current (mA) Figure 12. Reference current vs. temperature 2.0 1.5 1.0 0.5 0.0 -40 - Temperature (°C) Figure 14. Ratio of change vs. temperature KA 0.0 -0.5 -1.0 -1.5 -2.0 -40 - Temperature (°C) Figure 11. Reference voltage vs. cathode 3.0 2.5 2 REF See figure 1 1.5 1.0 0.5 0 100 0 ...
Page 8
... Instable Area Area 1E-7 1E-6 1E Current step Output voltage =10 mA Gain K See figure 4 Phase 10 100 1000 Frequency (kHz) 100 T SO8 80 Batwing 60 TO92 40 Safe Area Cathode voltage (V) TL1431 200 150 100 50 0 -50 -100 -150 -200 10000 = +25 ° C AMB 30 ...
Page 9
... TL1431 4 Parameter definitions Reference input voltage deviation over temperature range Δ defined as the difference between the maximum and minimum values obtained over ref the full temperature range. Δ ref ref max. Figure 21. Reference input voltage deviation over temperature range V ref max ...
Page 10
... These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK trademark. ECOPACK specifications are available at: www.st.com. 10/16 TL1431 ® ...
Page 11
... TL1431 5.1 SO-8 batwing package information Figure 23. SO-8 batwing package mechanical drawing Table 5. SO-8 batwing package mechanical data Ref ccc Dimensions Millimeters Min. Typ. Max. 1.75 0.10 0.25 1.25 0.28 0.48 0.17 0.23 4.80 4.90 5.00 5.80 6.00 6.20 3.80 3.90 4.00 1.27 0.25 0.50 0.40 1.27 1° 8° 0.10 Package information Inches Min. Typ. Max. 0.069 0.004 0.010 0.049 0.011 0.019 ...
Page 12
... TL1431 Max. 0.197 0.197 0.157 0.539 0.512 0.266 0.110 0.039 0.039 0.748 0.248 0.384 0.020 0.787 0.650 0.984 0.165 0.433 ...
Page 13
... TL1431 5.3 TO92 (bulk) package information Figure 25. TO-92 bulk package mechanical drawing Table 7. TO-92 bulk package mechanical data Dim Millimeters Min Typ. Max. 1.27 3.2 3.7 4.2 4.45 5.00 5.2 4.58 5.03 5.33 12.7 0.407 0.5 0.508 0.35 Package information Inches Min. Typ. Max. 0.05 0.126 0.1457 0.1654 0.1752 0.1969 0.2047 0.1803 0.198 0.2098 0.5 0.016 ...
Page 14
... TL1431CZT TL1431CZ-AP TL1431ACZ TL1431ACZT TL1431ACZ-AP TL1431ID TL1431IDT TL1431AID TL1431AIDT TL1431IZ TL1431ZT TL1431IZ-AP TL1431AIZ TL1431AIZT TL1431AIZ-AP (1) TL1431IYD (1) TL1431IYDT 1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 and Q 002 or equivalent are on-going. 14/16 Temperature Package range SO-8 -20°C, +70°C ...
Page 15
... TL1431 7 Revision history Table 9. Document revision history Date 01-Mar-2002 01-Nov-2005 25-Apr-2007 11-Mar-2008 Revision 1 Initial release. PPAP references inserted in the datasheet see 2 on page 14 . Minimum value for temperature range updated in conditions . Minimum values added and maximum values deleted for parameter in Table 4 3 Package information for TO92 tape and reel updated, see Package information Format update ...
Page 16
... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 16/16 Please Read Carefully: © 2008 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com TL1431 ...