The TL431 and TL432 devices are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between V ref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as on-board regulation, adjustable power supplies, and switching power supplies. The TL432 device has exactly the same functionality and electrical specifications as the TL431 device, but has different pinouts for the DBV, DBZ, and PK packages.
Both the TL431 and TL432 devices are offered in three grades, with initial tolerances (at 25°C) of 0.5%, 1%, and 2%, for the B, A, and standard grade, respectively. In addition, low output drift versus temperature ensures good stability over the entire temperature range.
The TL43xxC devices are characterized for operation from 0°C to 70°C, the TL43xxI devices are characterized for operation from –40°C to 85°C, and the TL43xxQ devices are characterized for operation from –40°C to 125°C.
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | TL431, TL432 Precision Programmable Reference datasheet (Rev. R) | PDF | HTML | 20 jul 2022 |
| E-book | Tips and tricks for designing with voltage references (Rev. A) | 07 may 2021 | ||
| Application note | Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) | 11 dic 2019 | ||
| Selection guide | 431 Device Nomenclature (Rev. B) | 18 sep 2019 | ||
| Application note | Designing With the Improved TL431LI (Rev. A) | 28 jun 2019 | ||
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 jun 2019 | ||
| Technical article | Designing for isolated DC/DC converter shunt safety | PDF | HTML | 29 ago 2015 | |
| Application note | Understanding stability boundary conditions charts in TL431, TL432 Data sheet (Rev. A) | 16 ene 2014 | ||
| Application note | Setting the shunt voltage on an adjustable shunt regulator | 01 sep 2011 | ||
| More literature | SLL Precision Reference Product Clip | 23 feb 2006 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
The TL431CALC spreadsheet calculates all component parameters for any desired output voltage for the TL43x, TLV43x and TL1431. The spreadsheet includes limits for each device. Resistor values are calculated to the nearest 1% value.
| Paquete | Pasadores | Descargar |
|---|---|---|
| SOT-23 (DBV) | 5 | Ver opciones |
| SOT-23 (DBZ) | 3 | Ver opciones |
| SOT-89 (PK) | 3 | Ver opciones |
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