TL431 STMicroelectronics, TL431 Datasheet

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TL431

Manufacturer Part Number
TL431
Description
Programmable Voltage Reference
Manufacturer
STMicroelectronics
Datasheet

Specifications of TL431

Adjustable Output Voltage
2.5 to 36 V
Sink Current Capability
1 to 100 mA
Typical Output Impedance
0.22 Ω

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Features
Applications
Description
The TL431 and TL432 are programmable shunt
voltage references with guaranteed temperature
stability over the entire operating temperature
range. The device temperature range is extended
for the automotive version from -40 °C up to
+125 °C. The output voltage can be set to any
value between 2.5 and 36 V with two external
resistors. The TL431 and TL432 operate with a
wide current range from 1 to 100 mA with a typical
dynamic impedance of 0.22 Ω.
November 2011
Adjustable output voltage: 2.5 to 36 V
Sink current capability: 1 to 100 mA
Typical output impedance: 0.22 Ω
1% and 2% voltage precision
Automotive temp. range - 40 °C to +125 °C
Power supply
Industrial
Automotive
Doc ID 4467 Rev 10
Programmable voltage reference
(Plastic package)
SOT23-5
TO-92
(Batwing plastic micropackage)
L
Z
SO-8
D
SOT23-3
SOT323-6
L
TL431
TL432
C
www.st.com
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Related parts for TL431

TL431 Summary of contents

Page 1

... The output voltage can be set to any value between 2.5 and 36 V with two external resistors. The TL431 and TL432 operate with a wide current range from 1 to 100 mA with a typical dynamic impedance of 0.22 Ω. November 2011 ...

Page 2

... Reference input voltage deviation over temperature range . . . . . . . . . . . . 7 4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1 SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.2 TO-92 ammopack and tape and reel package information . . . . . . . . . . . 13 4.3 TO-92 (bulk) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.4 SOT23-3 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.5 SOT23-5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.6 SOT323-6 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2/21 Doc ID 4467 Rev 10 TL431, TL432 ...

Page 3

... TO-92 pin connections (top view) Figure 2. SO-8 batwing pin connections (top view) Figure 3. SOT23-5 and SOT23-3 pin connections (top view) SOT23 Cathode 3 TL431 Figure 4. SOT323-6 pin connections (top view) Figure 5. TL431 and TL432 block diagram SO8 Cathode 1 8 Anode SOT23-3 5 Anode ...

Page 4

... T Storage temperature range stg T Junction temperature J TL431IY, TL431AIY-T: HBM (human body model) TL431-TL432: HBM (human body model) ESD MM: machine model CDM: charged device model 1. Short-circuits can cause excessive heating. These values are typical. 2. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ ...

Page 5

... TL431, TL432 3 Electrical characteristics Table 3. TL431C: 0° 70° Symbol Parameter Reference input voltage mA, T ref KA ref k ≤ T ≤ min amb max Reference input voltage deviation over temperature ΔV (1) range ref mA ref k Ratio of change in reference input voltage to change in cathode to anode voltage Δ ...

Page 6

... Electrical characteristics Table 4. TL431I/TL432I: -40° 105° Symbol Parameter Reference input voltage mA, T ref KA ref k ≤ T ≤ min amb max Reference input voltage deviation over temperature (1) ΔV range ref =10 mA ref k Ratio of change in reference input voltage to change in cathode to anode voltage Δ ...

Page 7

... TL431, TL432 Table 5. TL431IY: -40° 125° Symbol Parameter Reference input voltage ref KA ref k ≤ T ≤ min amb max Reference input voltage deviation over temperature (1) ΔV range ref mA ref k Ratio of change in reference input voltage to change in cathode to anode voltage Δ ...

Page 8

... V Figure 8. KA ref Input Output =10mA Figure 10. Test circuit for phase margin and off I OFF Input I =1mA K Doc ID 4467 Rev 10 TL431, TL432 Test circuit for programming mode REF R2 V REF ( ) ------ - = REF REF R2 voltage gain ...

Page 9

... TL431, TL432 Figure 12. Reference voltage vs. temperature 2.54 2.52 2.50 2.48 2.46 2.44 -40 - Temperature ( Figure 14. Zoom on reference voltage vs. cathode current Figure 16. Off-state cathode current vs. temperature 0.4 0.3 0.2 0.1 0.0 -40 - Temperature ( Figure 13. Reference voltage vs. cathode REF 100 120 ° C) Figure 15. Reference current vs. temperature 2.0 1.5 1.0 0.5 0.0 -40 Figure 17. Ratio of change in V ...

Page 10

... Figure 22. Maximum power dissipation 10/21 vs. Figure 19. Minimum operating current vs REF 0.4 0.2 0.0 - 100 120 ° C) Figure 21. Stability behavior with capacitive Figure 23. Pulse response for I Doc ID 4467 Rev 10 TL431, TL432 temperature REF - 100 ° Temperature ( C) loads = 120 ...

Page 11

... TL431, TL432 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 trademark. Doc ID 4467 Rev 10 Package information ® ...

Page 12

... 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 1.04 0° 8° 0.10 Doc ID 4467 Rev 10 TL431, TL432 Inches Min. Typ. Max. 0.069 0.004 0.010 0.049 0.011 0.019 0.007 0.010 0.189 0.193 0.197 0.228 0.236 0.244 0.150 0.154 0.157 0.050 0.010 0.020 0.016 0.050 0.040 0° 8° 0.004 ...

Page 13

... TL431, TL432 4.2 TO-92 ammopack and tape and reel package information Figure 25. TO-92 ammopack and tape and reel package mechanical drawing Table 7. TO-92 ammopack and tape and reel package mechanical data Dim F1/F2 Δ h Δ Millimeters Min. ...

Page 14

... Package information 4.3 TO-92 (bulk) package information Figure 26. TO-92 bulk package mechanical drawing Table 8. TO-92 bulk package mechanical data Dim 14/21 Millimeters Min. Typ. Max. 1.35 4.70 2.54 4.40 12.70 3.70 0.5 Doc ID 4467 Rev 10 TL431, TL432 0067407_H Inches Min. Typ. Max. 0.053 0.185 0.100 0.173 0.500 0.146 0.019 ...

Page 15

... TL431, TL432 4.4 SOT23-3 package information Figure 27. SOT23-3 package mechanical drawing Table 9. SOT23-3 package mechanical data Ref Dimensions Millimeters Min. Typ. Max. 0.89 1.12 0.01 0.10 0.88 0.95 1.02 0.30 0.50 0.08 0.20 2.80 2.90 3.04 2.10 2.64 1.20 1.30 1.40 0.95 1.90 0.40 0.50 0.60 0. Doc ID 4467 Rev 10 Package information Inches Min. Typ. Max. 0.035 0.044 0.0004 0.004 ...

Page 16

... θ 0 degrees 16/21 Dimensions Millimeters Min. Typ. Max. 0.90 1.45 0.15 0.90 1.30 0.35 0.50 0.09 0.20 2.80 3.05 1.50 1.75 0.95 2.60 3.00 0.10 0.60 10 degrees Doc ID 4467 Rev 10 TL431, TL432 7049676_I Inches Min. Typ. Max. 0.035 0.057 0.006 0.035 0.051 0.014 0.020 0.004 0.008 0.110 0.120 0.059 0.069 0.037 0.102 0.118 0.004 0.024 ...

Page 17

... TL431, TL432 4.6 SOT323-6 package information Figure 29. SOT323-6 package mechanical drawing Table 11. SOT323-6 package mechanical data Ref Dimensions Millimeters Min. Typ. Max. 0.80 1.10 0 0.10 0.80 1.00 0.15 0.30 0.10 0.18 1.80 2.20 1.15 1.35 0.65 1.80 2.40 0.10 0.40 0.10 0.40 Doc ID 4467 Rev 10 Package information 7095021_E Inches Min. Typ. Max. 0.031 0.043 0.004 0.031 0.039 ...

Page 18

... SOT323 -40° 105°C 2 SOT23 SOT23 SOT23 SOT323-6 1 Doc ID 4467 Rev 10 TL431, TL432 Packing Tube or SO-8 Tape and reel Bulk or TO-92 Tape or Ammopack Tape Tube or SO-8 tape and reel Bulk or TO-92 Tape or Ammopack Tape Marking 431C 431AC TL431C ...

Page 19

... TL431, TL432 Table 12. Order codes (continued) Accuracy Order code (1) TL431IYD (1) TL431IYDT (1) TL431AIYD (1) TL431AIYDT 1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent. Temperature Package (%) range 2 -40° 125°C (Automotive grade level) 1 Doc ID 4467 Rev 10 ...

Page 20

... Section 4.4 on page Added new package mechanical data page 17 . Updated Table 12 on page 18 . Added new part number TL432, new order code connection for TL432 Figure 3 on page 3 Doc ID 4467 Rev 10 TL431, TL432 Changes Figure and Table 4 . Table 5 . Table 12 . and Section 4.5 on page ...

Page 21

... TL431, TL432 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. ...

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