TL431 可调节精密并联稳压器

TL431 描述

The TL431 and TL432 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 Vref (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 onboard regulation, adjustable power supplies, and switching power supplies. The TL432 has exactly the same functionality and electrical specifications as the TL431, but has different pinouts for the DBV, DBZ, and PK packages.

TL431 TL431A TL431B
VO Adj(Min)(V) 2.495   2.495   2.495  
VO Adj(Max)(V) 36   36   36  
Initial Accuracy @ 25/deg C(%) 2   1   0.5  
Temp Coeff(Typ)(ppm/ degree C) 34   34   34  
Min Iz for Regulation(uA) 600   600   600  
Iout/Iz(Max)(mA) 100   100   100  
Pin/Package 3SOT-23, 3SOT-89, 5SOT-23   3SOT-23, 3SOT-89, 5SOT-23   3SOT-23, 3SOT-89, 5SOT-23  
Approx. Price (US$) 0.14 | 1ku   0.14 | 1ku   0.31 | 1ku  
Operating Temperature Range(°C) -40 to 125,-40 to 85,0 to 70   -40 to 125,-40 to 85,0 to 70   -40 to 125,-40 to 85,0 to 70  
Rating Catalog   Catalog   Catalog
TL431 特性
TL431 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
TL431CDBVR ACTIVE 0 to 70 0.31 | 1ku SOT-23 (DBV) | 5 3000 | LARGE T&R (TBC3, TBCU)
TL431CDBVRE4 ACTIVE 0 to 70 0.31 | 1ku SOT-23 (DBV) | 5 3000 | LARGE T&R (TBC3, TBCU)
TL431CDBVRG4 ACTIVE 0 to 70 0.31 | 1ku SOT-23 (DBV) | 5 3000 | LARGE T&R (TBC3, TBCU)
TL431CDBZR ACTIVE 0 to 70 0.34 | 1ku SOT-23 (DBZ) | 3 3000 | LARGE T&R (TBC3, TBCU)
TL431CDBZRG4 ACTIVE 0 to 70 0.34 | 1ku SOT-23 (DBZ) | 3 3000 | LARGE T&R (TBC3, TBCU)
TL431CDBZT ACTIVE 0 to 70 0.65 | 1ku SOT-23 (DBZ) | 3 250 | SMALL T&R (TBC3, TBCU)
TL431CDBZTG4 ACTIVE 0 to 70 0.65 | 1ku SOT-23 (DBZ) | 3 250 | SMALL T&R (TBC3, TBCU)
TL431CPK ACTIVE 0 to 70 0.31 | 1ku SOT-89 (PK) | 3 1000 | LARGE T&R 2G
TL431CPKG3 ACTIVE 0 to 70 0.31 | 1ku SOT-89 (PK) | 3 1000 | LARGE T&R 2G
TL431IDBVR ACTIVE -40 to 85 0.31 | 1ku SOT-23 (DBV) | 5 3000 | LARGE T&R (TBC3, TBCU)
TL431IDBVRE4 ACTIVE -40 to 85 0.31 | 1ku SOT-23 (DBV) | 5 3000 | LARGE T&R (TBC3, TBCU)
TL431IDBVRG4 ACTIVE -40 to 85 0.31 | 1ku SOT-23 (DBV) | 5 3000 | LARGE T&R (TBC3, TBCU)
TL431IDBZR ACTIVE -40 to 85 0.34 | 1ku SOT-23 (DBZ) | 3 3000 | LARGE T&R (TBC3, TBCU)
TL431IDBZRG4 ACTIVE -40 to 85 0.34 | 1ku SOT-23 (DBZ) | 3 3000 | LARGE T&R (TBC3, TBCU)
TL431IDBZT ACTIVE -40 to 85 0.65 | 1ku SOT-23 (DBZ) | 3 250 | SMALL T&R (TBC3, TBCU)
TL431IDBZTG4 ACTIVE -40 to 85 0.65 | 1ku SOT-23 (DBZ) | 3 250 | SMALL T&R (TBC3, TBCU)
TL431IPK ACTIVE -40 to 85 0.31 | 1ku SOT-89 (PK) | 3 1000 | LARGE T&R 2G
TL431IPKG3 ACTIVE -40 to 85 0.31 | 1ku SOT-89 (PK) | 3 1000 | LARGE T&R 2G
TL431QDBVR ACTIVE -40 to 125 0.31 | 1ku SOT-23 (DBV) | 5 3000 | LARGE T&R (TBC3, TBCU)
TL431QDBVRE4 ACTIVE -40 to 125 0.31 | 1ku SOT-23 (DBV) | 5 3000 | LARGE T&R (TBC3, TBCU)
TL431QDBVRG4 ACTIVE -40 to 125 0.31 | 1ku SOT-23 (DBV) | 5 3000 | LARGE T&R (TBC3, TBCU)
TL431QDBVT ACTIVE -40 to 125 0.60 | 1ku SOT-23 (DBV) | 5 250 | SMALL T&R (TBC3, TBCU)
TL431QDBVTE4 ACTIVE -40 to 125 0.60 | 1ku SOT-23 (DBV) | 5 250 | SMALL T&R (TBC3, TBCU)
TL431QDBVTG4 ACTIVE -40 to 125 0.60 | 1ku SOT-23 (DBV) | 5 250 | SMALL T&R (TBC3, TBCU)
TL431QDBZR ACTIVE -40 to 125 0.34 | 1ku SOT-23 (DBZ) | 3 3000 | LARGE T&R (TBC3, TBCU)
TL431QDBZRG4 ACTIVE -40 to 125 0.34 | 1ku SOT-23 (DBZ) | 3 3000 | LARGE T&R (TBC3, TBCU)
TL431QDBZT PREVIEW -40 to 125   SOT-23 (DBZ) | 3 250 | SMALL T&R (TBC3, TBCU)
TL431QPK ACTIVE -40 to 125 0.31 | 1ku SOT-89 (PK) | 3 1000 | LARGE T&R 2G
TL431QPKG3 ACTIVE -40 to 125 0.31 | 1ku SOT-89 (PK) | 3 1000 | LARGE T&R 2G
TL431 应用技术支持与电子电路设计开发资源下载
  1. TL431 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器并联电压基准产品选型与价格参考 . xls
  3. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  4. 所选封装材料的热学和电学性质 (PDF 645 KB)
  5. 高速数据转换 (PDF 1967 KB)
  6. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
  7. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
  8. Principles of Data Acquisition and Conversion (PDF 50 KB)
  9. Interleaving Analog-to-Digital Converters (PDF 64 KB)
  10. What Designers Should Know About Data Converter Drift (PDF 95 KB)
  11. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
  12. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)
TL431 工具与软件
名称 型号 公司 工具/软件类型
针对 Code Composer Studio 的 DCPFREETOOL 软件插件 DCPFREETOOL Texas Instruments 实用程序/插件
MDACBufferPro Design Utility for Multiplying Digital to Analog Converter Design MDACBUFFERPRO Texas Instruments  应用软件