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.
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TL431, TL432 Precision Programmable Reference datasheet (Rev. R) | PDF | HTML | 2022年 7月 20日 |
| E-book | Tips and tricks for designing with voltage references (Rev. A) | 2021年 5月 7日 | ||
| Application note | Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) | 2019年 12月 11日 | ||
| Selection guide | 431 Device Nomenclature (Rev. B) | 2019年 9月 18日 | ||
| Application note | Designing With the Improved TL431LI (Rev. A) | 2019年 6月 28日 | ||
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019年 6月 28日 | ||
| Technical article | Designing for isolated DC/DC converter shunt safety | PDF | HTML | 2015年 8月 29日 | |
| Application note | Understanding stability boundary conditions charts in TL431, TL432 Data sheet (Rev. A) | 2014年 1月 16日 | ||
| Application note | Setting the shunt voltage on an adjustable shunt regulator | 2011年 9月 1日 | ||
| More literature | SLL Precision Reference Product Clip | 2006年 2月 23日 |
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
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.
| 封裝 | 引腳 | 下載 |
|---|---|---|
| SOT-23 (DBV) | 5 | 檢視選項 |
| SOT-23 (DBZ) | 3 | 檢視選項 |
| SOT-89 (PK) | 3 | 檢視選項 |