TL431LI-Q1
- Qualified for automotive applications
- AEC-Q100 qualified with the following
results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature
- Device temperature grade 0: –40°C to +150°C ambient operating temperature
- Reference voltage tolerance at 25°C
- 0.5% (B grade)
- 1% (A grade)
- Minimum typical output voltage: 2.495 V
- Adjustable output voltage: Vref to 36 V
- 27 mV maximum temperature drift for grade 1
- 34 mV maximum temperature drift for grade 0
- 0.3-Ω typical output impedance
- Sink-current capability
- Imin = 0.6 mA (max)
- IKA = 15 mA (max)
- Reference input current IREF: 0.4 µA (max)
- Deviation of reference input current over temperature, II(dev): 0.3 µA (max)
The TL431LI-Q1 is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.495 V) and 36 V with two external resistors. The device has a typical output impedance of 0.3 Ω. Its active output circuitry provides a very sharp turn-on characteristic, making it an excellent replacement for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. This device is a pin-to-pin alternative to the industry standard TL431-Q1 with optimized Iref and IIdev performance. The lower Iref and IIdev values of the TL431LI-Q1 enable designers to achieve higher system accuracy and lower leakage current. The TL432LI-Q1 has exactly the same functionality and electrical specifications as the TL431LI-Q1, but has a different pinout for the DBZ package.
The TL431LI-Q1 is offered in two grades, with initial tolerances (at 25°C) of 0.5% and 1%, for the B and A grade, respectively. The TL431LI-Q1 is also available in two temperature grades: grade 1 (denoted by a ’Q’ in the part number), and grade 0 (denoted by a ’E’ in the part number), which represent maximum ambient operating temperatures of 125°C and 150°C respectively. The TL43xLI-Q1 is characterized for operation from –40°C to 125°C for grade 1, and –40°C to 150°C for grade 0, and its low output drift versus temperature ensures good stability over the entire temperature range.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TL431LI-Q1 / TL432LI-Q1 Programmable Shunt Regulator With Optimized Reference Current datasheet (Rev. A) | PDF | HTML | 2019. 11. 14 | |
| 애플리케이션 노트 | Precision Current Sources and Sinks Using Voltage References (Rev. A) | PDF | HTML | 2026. 4. 15 | ||
| 기술 문서 | 옵토커플러가 적절하게 바이어스되었는지 확인 | PDF | HTML | Download English Version | 2024. 3. 22 | |
| 아날로그 디자인 학술지 | High-power, low-cost, discrete linear pre-regulator for automotive rear lights | 2020. 12. 21 | |||
| 기능 안전 정보 | TL43xLI-Q1 Functional Safety FIT Rate and Failure Mode Distribution | 2019. 12. 18 | |||
| 애플리케이션 노트 | Current Supply Monitoring with the TL431LI-Q1 | 2019. 10. 7 | |||
| 애플리케이션 노트 | Designing With the Improved TL431LI (Rev. A) | 2019. 6. 28 | |||
| e북 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019. 6. 28 | |||
| 애플리케이션 노트 | Implementing Voltage References and Supervisors Into Your Traction Inverter Desi | 2019. 5. 22 |
설계 및 개발
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SHUNT-REFERENCE-CALC — Shunt Reference Selector and Design Calculator
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23 (DBZ) | 3 | Ultra Librarian |