TL431LI

現行

具有最佳化參考電流的可調整精密分流穩壓器 (針腳配置:KRA)

產品詳細資料

VO (V) 2.495 Initial accuracy (max) (%) 0.5, 1 VO adj (min) (V) 2.495 VO adj (max) (V) 36 Iz for regulation (min) (µA) 400 Reference voltage (V) adjustable Rating Catalog Temp coeff (max) (ppm/°C) 63 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
VO (V) 2.495 Initial accuracy (max) (%) 0.5, 1 VO adj (min) (V) 2.495 VO adj (max) (V) 36 Iz for regulation (min) (µA) 400 Reference voltage (V) adjustable Rating Catalog Temp coeff (max) (ppm/°C) 63 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • 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
  • Operation From −40°C to +125°C (Q Temp)
  • Maximum Temperature Drift
    • 10 mV (C Temp)
    • 17 mV (I Temp)
    • 27 mV (Q Temp)
  • 0.3-Ω Typical Output Impedance
  • Sink-Current Capability
    • Imin = 1 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)
  • 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
  • Operation From −40°C to +125°C (Q Temp)
  • Maximum Temperature Drift
    • 10 mV (C Temp)
    • 17 mV (I Temp)
    • 27 mV (Q Temp)
  • 0.3-Ω Typical Output Impedance
  • Sink-Current Capability
    • Imin = 1 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 device 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. These devices have a typical output impedance of 0.3 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. This device is a pin-to-pin alternative to the industry standard TL431, with optimized Iref and IIdev performance. The lower Iref and IIdev values enable designers to achieve higher system accuracy and lower leakage current. The TL432LI device has exactly the same functionality and electrical specifications as the TL431LI device, but has a different pinout for the DBZ package.

The TL431LI device is offered in two grades, with initial tolerances (at 25°C) of 0.5% and 1%, for the B and A grade, respectively. In addition, low output drift versus temperature ensures good stability over the entire temperature range.

The TL43xLIxQ devices are characterized for operation from –40°C to 125°C.

The TL431LI device 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. These devices have a typical output impedance of 0.3 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. This device is a pin-to-pin alternative to the industry standard TL431, with optimized Iref and IIdev performance. The lower Iref and IIdev values enable designers to achieve higher system accuracy and lower leakage current. The TL432LI device has exactly the same functionality and electrical specifications as the TL431LI device, but has a different pinout for the DBZ package.

The TL431LI device is offered in two grades, with initial tolerances (at 25°C) of 0.5% and 1%, for the B and A grade, respectively. In addition, low output drift versus temperature ensures good stability over the entire temperature range.

The TL43xLIxQ devices are characterized for operation from –40°C to 125°C.

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類型 標題 日期
* Data sheet TL431LI / TL432LI Programmable Shunt Regulator with Optimized Reference Current datasheet (Rev. A) PDF | HTML 2018年 11月 12日
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 2024年 1月 9日
Application note Optimization of a Shunt Reference for Flyback Converters PDF | HTML 2023年 10月 18日
Application note Designing Stable Isolated Power Supplies with Shunt Regulators PDF | HTML 2022年 12月 29日
Application note IEEE 802.3cg 10BASE-T1L Power over Data Lines Powered Device Design (Rev. A) PDF | HTML 2022年 6月 2日
Application note Voltage and Processor Monitoring Solutions in Factory Automation and Control App (Rev. A) 2021年 8月 5日
Analog Design Journal High-power, low-cost, discrete linear pre-regulator for automotive rear lights 2020年 12月 21日
Application note Precision Current Sources and Sinks Using Voltage References 2020年 6月 30日
Technical article How modern voltage references help shrink small designs PDF | HTML 2020年 6月 1日
Application note Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) 2019年 12月 11日
Selection guide 431 Device Nomenclature (Rev. B) 2019年 9月 18日
Application brief An Isolated 24 V Power Supply Window Monitor 2019年 8月 1日
Application note Designing With the Improved TL431LI (Rev. A) 2019年 6月 28日
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28日

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開發板

ATL431EVM-001 — ATL431 可調整分流穩壓器評估模組

The ATL431EVM-001 evaluation module (EVM) features the functionality and adjustability of the ATL431 by letting you program the cathode voltage with various resistor values. You can also set the cathode current using the various resistors in series with the supply. (...)

使用指南: PDF
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模擬型號

TL431LI PSpice Transient Model

SLVMCW2.ZIP (56 KB) - PSpice Model
模擬型號

TL431LI Unencrypted PSpice Transient Model

SLVMCW1.ZIP (2 KB) - PSpice Model
模擬型號

TL431LI and ATL431LI PSpice Average Model

SLVMCX5.ZIP (78 KB) - PSpice Model
模擬型號

TL431LI and ATL431LI Unencrypted PSpice Average Model

SLVMCX4.ZIP (1 KB) - PSpice Model
計算工具

SHUNT-REFERENCE-CALC Shunt Reference Selector and Design Calculator

This tool guides the user through the design process for the TLx431 and LM40x0 family of shunt voltage references. This calculator will recommend resistance and capacitance values to optimally meet the user's desired specifications.
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產品
分流電壓參考
ATL431 2.5-V 低 IQ 可調整精密分流穩壓器 ATL431LI 以超小型 DQN 封裝提供的低 IQ 可編程分流穩壓器 ATL431LI-Q1 車用高頻寬、低 IQ 可編程分流穩壓器 (針腳配置:KRA) ATL432 2.5V 精密可編程分流穩壓器 ATL432LI 高頻寬、低 IQ 可編程分流穩壓器 (針腳配置:RKA) ATL432LI-Q1 車用高頻寬、低 IQ 可編程分流穩壓器 (針腳配置:RKA) LM4030 超高精確分流電壓參考 LM4040 固定電壓、45-µA 精密微功率分流電壓參考 LM4040-N 100-ppm/°C 精密微功率分流電壓參考 LM4040-N-Q1 車用 100-ppm/°C 精密微功率分流電壓參考 LM4040C25-EP 強化型產品 2.5V 精密微功耗分流電壓參考,0.5% 精確度 LM4041-N 固定式與可調式 45-µA 精密微功率分流電壓參考 LM4041-N-Q1 車用精密微功率分流電壓參考 LM4041A12 1.2-V 精密微功率分流電壓參考,0.1% 準確度 LM4041B 可調式精密微功耗分流電壓參考,0.2% 精確度 LM4041B12 1.2-V 精密微功率分流電壓參考,0.2% 準確度 LM4041C 可調式精密微功耗分流電壓參考,0.5% 精確度 LM4041C12 1.2-V 精密微功率分流電壓參考,0.5% 準確度 LM4041D 可調式精密微功耗分流電壓參考,1% 精確度 LM4041D12 1.2-V 精密微功率分流電壓參考,1% 準確度 LM4050-N 50-ppm/°C 精密微功率分流電壓參考 LM4050-N-Q1 車用 50-ppm/°C 精密微功率分流電壓參考 LM4050QML-SP 抗輻射 QMLV、2.5-V 或 5-V 分流電壓參考 LM4051-N 固定式與可調式精密微功率分流電壓參考 LMV431 1.5% 低電壓 (1.24-V) 可調式精密分流穩壓器 LMV431A 1% 低電壓 (1.24-V) 可調式精密分流穩壓器 LMV431B 0.5% 低電壓 (1.24-V) 可調節式精密分流穩壓器 TL431 可調整精密度分流穩壓器 TL431-Q1 車用可調式精密分流穩壓器 (針腳配置:KRA) TL431C 2% 可調式精準分流穩壓器 TL431LI 具有最佳化參考電流的可調整精密分流穩壓器 (針腳配置:KRA) TL431LI-Q1 具有最佳化參考電流的車用可調整精密分流穩壓器 TL432 可調精密度分流穩壓器 (反向針腳配置) TL432-Q1 車用可調式精密分流穩壓器 (針腳配置:RKA) TL432LI 具有最佳化參考電流的可調整精密分流穩壓器 (針腳配置:RKA) TL432LI-Q1 具有最佳化參考電流的車用可調整精密分流穩壓器 TLA431 具有 KRA 接腳配置的所有電容器穩定精密可編程參考 TLV431 1.5% 準確度、低電壓、可調整精密度分流穩壓器 TLV431A 1% 準確度、低電壓、可調整精密度分流穩壓器 TLV431A-Q1 車用低店家可調式精密分流聯穩壓器 TLV431B 0.5% 準確度、低電壓、可調整精密度分流穩壓器 TLV431B-Q1 車用低店家可調式精密分流聯穩壓器 TLVH431 1.5% 低電壓寬操作電流可調整精密度分流穩壓器 TLVH431A 1% 低電壓寬操作電流可調整精密度分流穩壓器 TLVH431A-Q1 車用低電壓可調式精密分流穩壓器 TLVH431B 0.5% 低電壓寬操作電流可調整精密度分流穩壓器 TLVH431B-EP 強化型塑膠 0.5% 低電壓寬運作電流可調整精密度分流穩壓器 TLVH431B-Q1 車用低電壓可調式精密分流聯穩壓器 (反向接腳配置) TLVH432 1.5% 低電壓寬操作電流可調整精密度分流穩壓器 (反向針腳配置) TLVH432A 1% 低電壓寬操作電流可調整精密度分流穩壓器 (反向針腳配置) TLVH432B 0.5% 低電壓寬操作電流可調式精密分流穩壓器 (反向接腳配置)
一般用途運算放大器
TLV4313 四路、5.5-V、1-MHz、低靜態電流 (65-μA)、RRIO 運算放大器 TLV4314 四路、5.5-V、3-MHz、RRIO 運算放大器 TLV4314-Q1 車規、四路、5.5-V、3-MHz、RRIO 運算放大器 TLV4316 四路、5.5-V、10-MHz、RRIO 運算放大器 TLV4316-Q1 車規、四路、5.5-V、10-MHz、RRIO 運算放大器 TLV4379 四路、5.5-V、90-kHz、低靜態電流 (4-μA)、RRIO 運算放大器
精密度運算放大器 (Vos<1mV)
TLV4333 適用於成本導向系統的四路、350-kHz、低雜訊、RRIO、CMOS 運算放大器 TLV4376 四路、5.5-MHz、100 µV 偏移、8-nV/√Hz 雜訊、815-µA 功率、精密運算放大器 TLV4387 四路、超高精確度 (10 μV) 零漂移 (0.01 μV/°C)、低輸入偏壓電流運算放大器
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)

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