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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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TL431-Q1 / TL432-Q1 Adjustable Precision Shunt Regulator datasheet (Rev. G) | PDF | HTML | 2020/5/7 | ||
| 應用說明 | Precision Current Sources and Sinks Using Voltage References (Rev. A) | PDF | HTML | 2026/4/15 | |||
| 技術文章 | 確定您的光耦合器具有正確偏壓 | PDF | HTML | Download English Version | PDF | HTML | 2024/3/20 | |
| 類比設計期刊 | High-power, low-cost, discrete linear pre-regulator for automotive rear lights | 2020/12/21 | ||||
| 功能安全資訊 | TL43x-Q1 Functional Safety FIT Rate and Failure Mode Distribution | 2019/12/18 | ||||
| 電子書 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/6/28 | ||||
| Application brief | Automotive LED Lighting with Adjustable Shunt References | 2018/7/17 | ||||
| 技術文章 | Using dual high-current op amps to drive automotive LED lights | PDF | HTML | 2015/7/20 |
設計與開發
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)。
TL431 Family Unencrypted PSpice Transient and AC Model (Rev. B)
SHUNT-REFERENCE-CALC — Shunt Reference Selector and Design Calculator
許多 TI 參考設計包含 TL431-Q1
使用我們的參考設計選擇工具，以檢視並找出最適合您的應用和參數的設計。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
| SOT-23 (DBZ) | 3 | Ultra Librarian |