TL431A 可调节精密并联稳压器
TL431A 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 Ohm. 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 |
TL431A 特性
- Operation From –40°C to 125°C
- Reference Voltage Tolerance at 25°C
- 0.5% . . . B Grade
- 1%. . . A Grade
- 2% . . . Standard Grade
- Typical Temperature Drift (TL431A)
- 6 mV (C-Temp)
- 14 mV (I-Temp, Q-Temp)
- Low Output Noise
- 0.2-Ohm Typical Output Impedance
- Sink-Current Capability . . . 1 mA to 100 mA
- Adjustable Output Voltage . . . Vref to 36 V
TL431A 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 |
| TL431ACDBVR |
ACTIVE |
0 to 70 |
0.31 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431ACDBVRE4 |
ACTIVE |
0 to 70 |
0.31 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431ACDBVRG4 |
ACTIVE |
0 to 70 |
0.31 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431ACDBZR |
ACTIVE |
0 to 70 |
0.34 | 1ku |
SOT-23 (DBZ) | 3 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431ACDBZRG4 |
ACTIVE |
0 to 70 |
0.34 | 1ku |
SOT-23 (DBZ) | 3 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431ACDBZT |
ACTIVE |
0 to 70 |
0.65 | 1ku |
SOT-23 (DBZ) | 3 |
250 | SMALL T&R |
(TBC3, TBCU) |
| TL431ACDBZTG4 |
ACTIVE |
0 to 70 |
0.65 | 1ku |
SOT-23 (DBZ) | 3 |
250 | SMALL T&R |
(TBC3, TBCU) |
| TL431ACPK |
ACTIVE |
0 to 70 |
0.31 | 1ku |
SOT-89 (PK) | 3 |
1000 | LARGE T&R |
2G |
| TL431ACPKG3 |
ACTIVE |
0 to 70 |
0.31 | 1ku |
SOT-89 (PK) | 3 |
1000 | LARGE T&R |
2G |
| TL431AIDBVR |
ACTIVE |
-40 to 85 |
0.31 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AIDBVRE4 |
ACTIVE |
-40 to 85 |
0.31 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AIDBVRG4 |
ACTIVE |
-40 to 85 |
0.31 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AIDBZR |
ACTIVE |
-40 to 85 |
0.34 | 1ku |
SOT-23 (DBZ) | 3 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AIDBZRG4 |
ACTIVE |
-40 to 85 |
0.34 | 1ku |
SOT-23 (DBZ) | 3 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AIDBZT |
ACTIVE |
-40 to 85 |
0.65 | 1ku |
SOT-23 (DBZ) | 3 |
250 | SMALL T&R |
(TBC3, TBCU) |
| TL431AIDBZTG4 |
ACTIVE |
-40 to 85 |
0.65 | 1ku |
SOT-23 (DBZ) | 3 |
250 | SMALL T&R |
(TBC3, TBCU) |
| TL431AIPK |
ACTIVE |
-40 to 85 |
0.31 | 1ku |
SOT-89 (PK) | 3 |
1000 | LARGE T&R |
2G |
| TL431AIPKG3 |
ACTIVE |
-40 to 85 |
0.31 | 1ku |
SOT-89 (PK) | 3 |
1000 | LARGE T&R |
2G |
| TL431AQDBVR |
ACTIVE |
-40 to 125 |
0.31 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AQDBVRE4 |
ACTIVE |
-40 to 125 |
0.31 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AQDBVRG4 |
ACTIVE |
-40 to 125 |
0.31 | 1ku |
SOT-23 (DBV) | 5 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AQDBVT |
ACTIVE |
-40 to 125 |
0.60 | 1ku |
SOT-23 (DBV) | 5 |
250 | SMALL T&R |
(TBC3, TBCU) |
| TL431AQDBVTE4 |
ACTIVE |
-40 to 125 |
0.60 | 1ku |
SOT-23 (DBV) | 5 |
250 | SMALL T&R |
(TBC3, TBCU) |
| TL431AQDBVTG4 |
ACTIVE |
-40 to 125 |
0.60 | 1ku |
SOT-23 (DBV) | 5 |
250 | SMALL T&R |
(TBC3, TBCU) |
| TL431AQDBZR |
ACTIVE |
-40 to 125 |
0.34 | 1ku |
SOT-23 (DBZ) | 3 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AQDBZRG4 |
ACTIVE |
-40 to 125 |
0.34 | 1ku |
SOT-23 (DBZ) | 3 |
3000 | LARGE T&R |
(TBC3, TBCU) |
| TL431AQDBZT |
PREVIEW |
-40 to 125 |
|
SOT-23 (DBZ) | 3 |
250 | SMALL T&R |
(TBC3, TBCU) |
| TL431AQPK |
ACTIVE |
-40 to 125 |
0.31 | 1ku |
SOT-89 (PK) | 3 |
1000 | LARGE T&R |
2G |
| TL431AQPKG3 |
ACTIVE |
-40 to 125 |
0.31 | 1ku |
SOT-89 (PK) | 3 |
1000 | LARGE T&R |
2G |
TL431A 应用技术支持与电子电路设计开发资源下载
- TL431A 数据资料 dataSheet 下载.PDF
- TI 德州仪器并联电压基准产品选型与价格参考 . xls
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF
1305 KB)
- Analog-to-Digital Converter Grounding Practices Affect System
Performance (PDF 56 KB)
- Principles of Data Acquisition and Conversion (PDF 50 KB)
- Interleaving Analog-to-Digital Converters (PDF 64 KB)
- What
Designers Should Know About Data Converter Drift (PDF 95 KB)
- Giving Delta-Sigma Converters a Gain Boost with a Front End
Analog Gain Stage (PDF 70 KB)
- Programming Tricks for Higher Conversion Speeds Utilizing Delta
Sigma Converters (PDF 105 KB)
TL431A 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 |