TL431-Q1
- Qualified for automotive applications
- AEC-Q100 test guidance
with the following:
- Device temperature grade 1: –40°C to 125°C ambient operating temperature range
- Reference voltage
tolerance at 25°C:
- 1% (A Grade)
- 0.5% (B Grade)
- Typical temperature drift:
- 14 mV (Q Temp)
- Low output noise
- 0.2-Ω Typical output impedance
- Sink-current capability: 1 mA to 100 mA
- Adjustable output voltage: VREF to 36 V
The TL431LI-Q1 / TL432LI-Q1 are pin-to-pin alternatives to TL431-Q1 / TL432-Q1. TL43xLI-Q1 offers better stability, lower temperature drift (VI(dev)), and lower reference current (Iref) for improved system accuracy.
The TL431-Q1 is a three-pin adjustable shunt regulator with specified thermal stability over applicable automotive temperature ranges. The output voltage can be set to any value from VREF (approximately 2.5 V) to 36 V, with two external resistors (see Figure 28). This device has a typical output impedance of 0.2 Ω. Active output circuitry provides a sharp turnon characteristic, making this device an excellent replacement for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies.
The TL432-Q1 has exactly the same functionality and electrical specifications as the TL431-Q1 device, but has a different pinout for the DBZ package.
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技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | TL431-Q1 / TL432-Q1 Adjustable Precision Shunt Regulator 数据表 (Rev. G) | PDF | HTML | 2020-5-7 | ||
| 应用手册 | 使用电压基准的精密电流源和电流阱 | PDF | HTML | PDF | HTML | 2026-4-20 | ||
| 技术文章 | 确保光耦合器正确偏置 | PDF | HTML | 英语版 | PDF | HTML | 2024-3-8 | |
| 应用手册 | OBC DC/DC SiC MOSFET驱动选型及供电设计要点 | 2023-1-13 | ||||
| 模拟设计期刊 | 用于汽车后灯的大功率、低成本、离散线性预调节器 | 英语版 | 2021-1-29 | |||
| 功能安全信息 | TL43x-Q1 Functional Safety FIT Rate and Failure Mode Distribution | 2019-12-18 | ||||
| 电子书 | 电压监测仪和电压检测器：提示、技巧和基础知识 | 英语版 | 2019-8-28 | |||
| 应用简报 | Automotive LED Lighting with Adjustable Shunt References | 2018-7-17 | ||||
| 技术文章 | Using dual high-current op amps to drive automotive LED lights | PDF | HTML | 2015-7-20 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
TL431 Family Unencrypted PSpice Transient and AC Model (Rev. B)
SHUNT-REFERENCE-CALC — Shunt Reference Selector and Design Calculator
许多 TI 参考设计都包括 TL431-Q1
通过我们的参考设计选择工具来审查并确定最适用于您应用和参数的设计。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
| SOT-23 (DBZ) | 3 | Ultra Librarian |