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TL431

現行

可調整精密度分流穩壓器

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產品規格表
使用指南

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TL431

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog VO (V) 2.495 Initial accuracy (max) (%) 0.5, 1, 2 Iz for regulation (min) (µA) 400 VO adj (min) (V) 2.495 VO adj (max) (V) 36 Reference voltage (V) Adjustable, adjustable Temp coeff (max) (ppm/°C) 92 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 100
Rating Catalog VO (V) 2.495 Initial accuracy (max) (%) 0.5, 1, 2 Iz for regulation (min) (µA) 400 VO adj (min) (V) 2.495 VO adj (max) (V) 36 Reference voltage (V) Adjustable, adjustable Temp coeff (max) (ppm/°C) 92 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 100
SOT-23 (DBZ) 3 6.9204 mm² (2.92 mm × 2.37 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm) SOT-89 (PK) 3 18.4275 mm² (4.5 mm × 4.095 mm) SOP (PS) 8 48.36 mm² (6.2 mm × 7.8 mm) SOT-SC70 (DCK) 6 4.2 mm² (2 mm × 2.1 mm) TO-92 (LP) 3 19.136 mm² (5.2 mm × 3.68 mm) TSSOP (PW) 8 19.2 mm² (3 mm × 6.4 mm) PDIP (P) 8 92.5083 mm² (9.81 mm × 9.43 mm)
  • Reference voltage tolerance at 25°C
    • 0.5% (B grade)
    • 1% (A grade)
    • 2% (Standard grade)
  • Adjustable output voltage: Vref to 36V
  • Operation from −40°C to 125°C
  • Typical temperature drift (TL43xB)
    • 6mV (C temp)
    • 14mV (I temp, Q temp)
  • Low Output Noise
  • 0.2Ω Typical output impedance
  • Sink-current capability: 1mA to 100mA
  • Reference voltage tolerance at 25°C
    • 0.5% (B grade)
    • 1% (A grade)
    • 2% (Standard grade)
  • Adjustable output voltage: Vref to 36V
  • Operation from −40°C to 125°C
  • Typical temperature drift (TL43xB)
    • 6mV (C temp)
    • 14mV (I temp, Q temp)
  • Low Output Noise
  • 0.2Ω Typical output impedance
  • Sink-current capability: 1mA to 100mA

The TL431 and TL432 devices 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 2.5V) and 36V, with two external resistors. These devices have a typical output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as on-board regulation, adjustable power supplies, and switching power supplies. The TL432 device has exactly the same functionality and electrical specifications as the TL431 device, but has different pinouts for the DBV, DBZ, and PK packages.

Both the TL431 and TL432 devices are offered in three grades, with initial tolerances (at 25°C) of 0.5%, 1%, and 2%, for the B, A, and standard grade, respectively. In addition, low output drift versus temperature verifies good stability over the entire temperature range.

The TL43xxC devices are characterized for operation from 0°C to 70°C, the TL43xxI devices are characterized for operation from –40°C to 85°C, and the TL43xxQ devices are characterized for operation from –40°C to 125°C.

The TL431 and TL432 devices 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 2.5V) and 36V, with two external resistors. These devices have a typical output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as on-board regulation, adjustable power supplies, and switching power supplies. The TL432 device has exactly the same functionality and electrical specifications as the TL431 device, but has different pinouts for the DBV, DBZ, and PK packages.

Both the TL431 and TL432 devices are offered in three grades, with initial tolerances (at 25°C) of 0.5%, 1%, and 2%, for the B, A, and standard grade, respectively. In addition, low output drift versus temperature verifies good stability over the entire temperature range.

The TL43xxC devices are characterized for operation from 0°C to 70°C, the TL43xxI devices are characterized for operation from –40°C to 85°C, and the TL43xxQ devices are characterized for operation from –40°C to 125°C.
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技術文件

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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, TL432 Precision Programmable Reference datasheet (Rev. S) PDF | HTML 2024/5/31
* 使用指南 200-VA HF Inverter Design Based on UCD8220 and MSP430G2330 for Automotive Applications 2013/3/7
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
應用說明 Optimization of a Shunt Reference for Flyback Converters PDF | HTML 2023/10/18
應用說明 Designing Stable Isolated Power Supplies with Shunt Regulators PDF | HTML 2022/12/29
電子書 Tips and tricks for designing with voltage references (Rev. A) 2021/5/7
類比設計期刊 High-power, low-cost, discrete linear pre-regulator for automotive rear lights 2020/12/21
技術文章 Overcoming common design challenges in an UV sterilization box system PDF | HTML 2020/7/27
技術文章 How modern voltage references help shrink small designs PDF | HTML 2020/6/1
應用說明 Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) 2019/12/11
選擇指南 431 Device Nomenclature (Rev. B) 2019/9/18
應用說明 Designing With the Improved TL431LI (Rev. A) 2019/6/28
電子書 Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019/6/28
白皮書 Voltage reference selection basics white paper (Rev. A) 2018/10/23
應用說明 TL431 Pin FMEA 2018/1/12
應用說明 Low Cost Bidirectional Current Sensing Using INA181 2017/7/28
技術文章 Differences between PSR and SSR in bias power-supply design PDF | HTML 2016/4/8
技術文章 The great compromise: voltage references PDF | HTML 2015/12/7
技術文章 Designing for isolated DC/DC converter shunt safety PDF | HTML 2015/8/29
技術文章 Can overcurrent protection be simple and precise, while minimizing cost? PDF | HTML 2015/7/31
技術文章 How to get no-load power savings in AC to DC supplies PDF | HTML 2015/6/8
應用說明 Designing Overcurrent protection for TPL7407L Peripheral Driver 2014/11/5
類比設計期刊 Low-cost flyback solutions for 10-mW standby power 2014/1/22
應用說明 Understanding stability boundary conditions charts in TL431, TL432 Data sheet (Rev. A) 2014/1/16
應用說明 Lead-Acid Charger and LED Driver using TPS5402 (Rev. A) 2013/6/13
應用說明 Compensation Design with TL431 for UCC28600 2013/1/16
應用說明 Setting the shunt voltage on an adjustable shunt regulator 2011/9/1
使用指南 A 90-W High-Efficiency, LLC Series-Resonant Converter 2010/11/3
類比設計期刊 Q1 2009 Issue Analog Applications Journal 2009/3/11
類比設計期刊 Using a portable-power boost converter in an isolated flyback application 2009/3/11
應用說明 Designing Switching Voltage Regulators With the TL494 (Rev. E) 2005/7/26

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)。

開發板

ATL431EVM-001 — ATL431 可調整分流穩壓器評估模組

ATL431EVM-001 評估模組 (EVM) 展示 ATL431 的功能與可調整性，讓您可使用各種電阻值對陰極電壓編程。您也可以使用與電源串聯的各種電阻來設定陰極電流。除了 EVM 上提供的電阻器外，您還可以將電阻焊接至電路板上，以根據您的應用自訂電路板。此 EVM 讓您可以透過跳線在陽極與陰極之間應用超過 12 個輸出電容，藉此檢查 ATL431 的穩定性。此 EVM 也相容於採用 SOT23-3 封裝的 TL431、TL431LI、ATL431LI、LM431 與 TLVH432 產品。

使用指南: PDF
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Third-party accessory

ADTEC-3P-EBIKE — AD-TEC 電動輔助自行車扭力與踏頻率感測器，搭載 DRV425 磁機械式元件

AD-TEC is a German deep-tech sensor company that develops contactless, magneto mechanical torque and cadence sensing solutions for eBike and pedal-assist systems, leveraging TI's DRV425 fluxgate magnetometer and a complete TI silicon stack. The AD-TEC eBike sensor is a permanently magnetized (...)
從：AD-TEC GmbH
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模擬型號

SPICE Model of TL431

SLOJ174.ZIP (0 KB) - Spice 模型
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模擬型號

TL431 Family Unencrypted PSpice Transient and AC Model (Rev. B)

SLVM071B.ZIP (130 KB) - PSpice 模型
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模擬型號

TL431x, TL432x TINA-TI AC Reference Design

SLVM165.TSC (65 KB) - TINA-TI 參考設計
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模擬型號

TL431x, TL432x TINA-TI Transient & AC Spice Model

SLVM163.ZIP (4 KB) - TINA-TI Spice 模型
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模擬型號

TL431x, TL432x TINA-TI Transient Reference Design

SLVM164.TSC (82 KB) - TINA-TI 參考設計
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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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計算工具

TL431CALC — TL431 Design Calculator

The TL431CALC spreadsheet calculates all component parameters for any desired output voltage for the TL43x, TLV43x and TL1431. The spreadsheet includes limits for each device. Resistor values are calculated to the nearest 1% value.

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許多 TI 參考設計包含 TL431

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 (DBZ) 3 Ultra Librarian
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
SOT-89 (PK) 3 Ultra Librarian
SOP (PS) 8 Ultra Librarian
SOT-SC70 (DCK) 6 Ultra Librarian
TO-92 (LP) 3 Ultra Librarian
TSSOP (PW) 8 Ultra Librarian
PDIP (P) 8 Ultra Librarian
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