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TLV431B-Q1

現行

車用、低電壓可調式精密分流穩壓器

產品詳細資料

Rating Automotive VO (V) 1.24 Initial accuracy (max) (%) 0.5 Iz for regulation (min) (µA) 55 VO adj (min) (V) 1.24 VO adj (max) (V) 6 Reference voltage (V) adjustable Temp coeff (max) (ppm/°C) 161 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
Rating Automotive VO (V) 1.24 Initial accuracy (max) (%) 0.5 Iz for regulation (min) (µA) 55 VO adj (min) (V) 1.24 VO adj (max) (V) 6 Reference voltage (V) adjustable Temp coeff (max) (ppm/°C) 161 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
SOT-23 (DBZ) 3 6.9204 mm² (2.92 mm × 2.37 mm) SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: -40°C to 125°C ambient operating temperature range
  • Low-voltage operation, VREF = 1.24V
  • Adjustable output voltage, VO = VREF to 6V
  • Reference voltage tolerances at 25°C
    • 0.5% for TLV431B
    • 1% for TLV431A
  • Typical temperature drift
    • 11mV (–40°C to 125°C)
  • Low operational cathode current, 80µA typical
  • 0.25Ω Typical output impedance
  • See TLVH431 and TLVH432 for:
    • Wider VKA (1.24V to 18V) and IK (80mA)
    • Multiple pinouts for SOT-23-3 and SOT-89 packages
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: -40°C to 125°C ambient operating temperature range
  • Low-voltage operation, VREF = 1.24V
  • Adjustable output voltage, VO = VREF to 6V
  • Reference voltage tolerances at 25°C
    • 0.5% for TLV431B
    • 1% for TLV431A
  • Typical temperature drift
    • 11mV (–40°C to 125°C)
  • Low operational cathode current, 80µA typical
  • 0.25Ω Typical output impedance
  • See TLVH431 and TLVH432 for:
    • Wider VKA (1.24V to 18V) and IK (80mA)
    • Multiple pinouts for SOT-23-3 and SOT-89 packages

The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to 1.24V on stand alone mode or any value between VREF (1.24V) and 6V with two external resistors (see Figure 6-2). These devices operate from a lower voltage (1.24V) than the widely used TL431 and TL1431 shunt-regulator references.

When used with an optocoupler, the TLV431 device is a voltage reference in isolated feedback circuits designed for 3V to 3.3V switching-mode power supplies. These devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.

The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to 1.24V on stand alone mode or any value between VREF (1.24V) and 6V with two external resistors (see Figure 6-2). These devices operate from a lower voltage (1.24V) than the widely used TL431 and TL1431 shunt-regulator references.

When used with an optocoupler, the TLV431 device is a voltage reference in isolated feedback circuits designed for 3V to 3.3V switching-mode power supplies. These devices have a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.

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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 TLV431x-Q1 Low-Voltage Adjustable Precision Shunt Regulator datasheet (Rev. B) PDF | HTML 2024/7/19
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

設計與開發

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模擬型號

TLV431 Family TINA-TI AC Reference Design

SLVM090.TSC (80 KB) - TINA-TI 參考設計
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模擬型號

TLV431 Family TINA-TI Transient and AC Spice Model

SLVM088.ZIP (3 KB) - TINA-TI Spice 模型
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模擬型號

TLV431 Family TINA-TI Transient Reference Design

SLVM089.TSC (45 KB) - TINA-TI 參考設計
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模擬型號

TLV431 Family Unencrypted PSpice Transient and AC Model (Rev. A)

SLIM005 (159 KB) - PSpice 模型
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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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參考設計

TIDA-01527 — 具有 C2000™ 微處理器和 ±0.1° 準確度的離散式解析器前端參考設計

此參考設計為激磁放大器和解析器感測器類比前端。此設計僅會在 1 平方英吋印刷電路板 (PCB) 上執行離散式零組件和標準運算放大器。提供的演算法和程式碼範例使用含 TMS320F28069M MCU 的 2000™ 微控制器 (MCU) LaunchPad™ 開發套件,以進行訊號處理及角度計算。參考設計採用了創新的分散式訊號處理方法。此方法可將系統準確性提高 250%,同時將硬體成本和複雜性保持在合理程度。TIDA-01527 是一款適合 TIDA-00796 和 TIDA-00363 參考設計的低成本配套設計。這些設計以 PGA411-Q1 為基礎,並提供保護和診斷等進階功能。
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參考設計

TIDA-01629 — 48V/500W 三相逆變器,具有用於伺服驅動器的智慧閘極驅動器參考設計

對於高達 60VDC 的精巧 DC 饋電驅動器來說,效率,保護及整合是重要的設計因素。此參考設計展示了額定 48VDC 輸入和 10ARMS 輸出電流的三相位逆變器。  100V 智慧型三相閘極驅動器 DRV8350R 搭載整合式降壓轉換器,以及配備超低閘極充電的六個 100V NexFET™ 功率 MOSFET,可實現功率級的高效運行。  使用 DRV8350R 的內部保護功能,可防止功率級過熱、過電流及馬達端子與馬達端子接地之間短路。使用 INA240 實現精密的相位電流感測。此介面為 3.3V I/O,可連接 C2000™ MCU 等主機 MCU,以進行無刷 AC 馬達控制。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBZ) 3 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian

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