TL431_07 STMICROELECTRONICS | Alldatasheet
Document overview
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Technical content
Programmable Voltage Reference ■ Adjustable output voltage: 2.5 to 36V ■ Sink current capab ility: 1 to 100mA ■ Typical output impedance: 0.22 Ω ■ 1% and 2% voltage precision
Description
The TL431 is a programmable shunt voltage reference with guaranteed temperature stability over the entire temperature range of operation. The output voltage may be set to any value between 2.5V and 36V with two external resistors. The TL431 operates with a wide current range from 1 to 100mA with a typical dynamic impedance of 0.22Ω. Order Codes Z TO92 (Plastic Package) D SO-8 (Plastic Micropackage) Part Number Temperature Range Package Packing Marking TL431CD/CDT 0, +70°C SO-8 Tube or Tape & Reel 431C TL431ACD/ACDT 431AC TL431CZ/CZT/CZ-AP TO92 TL431C TL431ACZ/ACZT/ACZ-AP TL431AC TL431ID/IDT -40, + 105°C SO-8 431I TL431AID/AIDT 431AI TL431IZ/IZT/IZ-AP TO92 TL431I TL431AIZ/AIZT/AIZ-AP TL431AI TL431IYD/IYDT SO-8 (automotive grade level) 431IY TL431AIYD/AIYDT 431AIY
1 Pin Diagrams
Figure 1. TO92 pin connections (top view) Figure 2. SO-8 pin connections (top view)
2 Absolute Maximum Ratings
Table 1. Key parameters and their absolute maximum ratings
- Pd is calculated with T amb = +25°C, Tj = +150°C and
Table 2. Operating conditions
3 Electrical Characteristics
Table 3. T amb = 25°C (unless otherwise specified)
- ∆Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range.
∆Vref = Vref max. - Vref min.
- The dynamic Impedance is definied as |ZKA| =
Table 4. T amb = 25°C (unless otherwise specified)
- ∆Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range.
∆Vref = Vref max. - Vref min.
- The dynamic Impedance is definied as |ZKA| =
4 Package Mechanical Data
In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. 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 is an ST trademark. ECOPACK specifications are available at:
4.1 SO-8 Package
DIM. mm. inch A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.04 0.010 A2 1.10 1.65 0.043 0.065 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 4.80 5.00 0.189 0.197 E 3.80 4.00 0.150 0.157 e 1.27 0.050 H 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 k ˚ (max.) ddd 0.1 0.04 SO-8 MECHANICAL DATA 0016023/C
4.2 TO92 (Tape & Reel) Package
DIM. mm. mils A 4.32 4.95 170.1 194.9 b 0.36 0.51 14.2 20.1 D 4.45 4.95 175.2 194.9 E 3.30 3.94 129.9 155.1 e 2.41 2.67 94.9 105.1 e1 1.14 1.40 44.9 55.1 L 12.7 15.49 500.0 609.8 R 2.16 2.41 85.0 94.9 S1 0.92 1.52 36.2 59.8 W 0.41 0.56 16.1 22.0 TO-92 MECHANICA DATA 0102782/C
4.3 TO92 (Tape Ammo Pack) Package
Dim. Millimeters Inches AL 5.0 0.197 A5 . 0 0 . 1 9 7 T4 . 0 0 . 1 5 7 d0 . 4 5 0 . 0 1 8 I1 2.5 0.098 ∆h -1 0 1 -0.039 0 0.039 ∆P -1 0 1 -0.039 0 0.039 W2 0.5 0.020 H2 0 0 . 7 8 7 H1 25 0.984 L1 11 0.433 P P A T H H1 H d I1 H0 W2 W0 W1 W F1 F2
4.4 TO92 (Bulk) Package
Dim. Millimeters Inches L 1.27 0.05 K 12.7 0.5 a 0.35 0.0138
5 Revision History
March 2002 1 Initial release. Nov. 2005 2 PP AP references inserted in the datasheet seeTable : Order Codes on page 1. Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this p ublication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicr oelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners © 2005 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Ital y - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America