TLV431

現行

1.5% 準確度、低電壓、可調整精密度分流穩壓器

產品詳細資料

VO (V) 1.24 Initial accuracy (max) (%) 1.5 VO adj (min) (V) 1.24 VO adj (max) (V) 6 Iz for regulation (min) (µA) 55 Reference voltage (V) adjustable Rating Catalog Temp coeff (max) (ppm/°C) 138 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
VO (V) 1.24 Initial accuracy (max) (%) 1.5 VO adj (min) (V) 1.24 VO adj (max) (V) 6 Iz for regulation (min) (µA) 55 Reference voltage (V) adjustable Rating Catalog Temp coeff (max) (ppm/°C) 138 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37 SOT-89 (PK) 3 18.4275 mm² 4.5 x 4.095 TO-92 (LP) 3 19.136 mm² 5.2 x 3.68
  • 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
    • 1.5% for TLV431
  • Typical temperature drift
    • 4mV (0°C to 70°C)
    • 6mV (–40°C to 85°C)
    • 11mV (–40°C to 125°C)
  • Low operational cathode current, 80µA typical
  • 0.25Ω typical output impedance
  • Ultra-small SC-70 package offers 40% smaller footprint than SOT-23-3
  • See TLVH431 and TLVH432 for:
    • Wider VKA (1.24V to 18 V) and IK (80mA)
    • Additional SOT-89 package
    • Multiple pinouts for SOT-23-3 and SOT-89 packages
  • On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. on all other products, production processing does not necessarily include testing of all parameters.
  • 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
    • 1.5% for TLV431
  • Typical temperature drift
    • 4mV (0°C to 70°C)
    • 6mV (–40°C to 85°C)
    • 11mV (–40°C to 125°C)
  • Low operational cathode current, 80µA typical
  • 0.25Ω typical output impedance
  • Ultra-small SC-70 package offers 40% smaller footprint than SOT-23-3
  • See TLVH431 and TLVH432 for:
    • Wider VKA (1.24V to 18 V) and IK (80mA)
    • Additional SOT-89 package
    • Multiple pinouts for SOT-23-3 and SOT-89 packages
  • On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. on all other products, production processing does not necessarily include testing of all parameters.

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 any value between VREF (1.24V) and 6V with two external resistors (see the Parameter Measurement Information section). 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 an ideal voltage reference in isolated feedback circuits 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 turnon 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 any value between VREF (1.24V) and 6V with two external resistors (see the Parameter Measurement Information section). 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 an ideal voltage reference in isolated feedback circuits 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 turnon 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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類型 標題 日期
* Data sheet TLV431x Low-Voltage Adjustable Precision Shunt Regulator datasheet (Rev. Z) PDF | HTML 2024年 6月 12日
Application brief A Simple Constant Voltage Regulation Using the MODE Pin (Rev. A) PDF | HTML 2024年 2月 15日
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 2024年 1月 9日
Technical article Mitigating CMTI on a PSR flyback for SiC-based traction inverter designs PDF | HTML 2024年 1月 5日
E-book Tips and tricks for designing with voltage references (Rev. A) 2021年 5月 7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
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28日
Analog Design Journal High-side current sources for industrial applications 2019年 3月 12日
Circuit design Window comparator circuit (Rev. A) PDF | HTML 2019年 2月 6日
White paper Voltage reference selection basics white paper (Rev. A) 2018年 10月 23日
Application note Low Cost Bidirectional Current Sensing Using INA181 2017年 7月 28日
Technical article Digitally select your reference voltage PDF | HTML 2016年 4月 27日
Application note Designing Overcurrent protection for TPL7407L Peripheral Driver 2014年 11月 5日
Analog Design Journal Low-cost flyback solutions for 10-mW standby power 2014年 1月 22日
Application note Supplying TPS61200 With a Single Solar Cell (Rev. B) 2011年 9月 6日
Application note Setting the shunt voltage on an adjustable shunt regulator 2011年 9月 1日
Application note Implementing a Buck Converter With the TPS23753A 2010年 9月 20日
User guide Low Cost Isolated Power Supply for PoE Applications 2003年 5月 20日
User guide 10-Watt Flyback Converter Utilizing the UCC3809 (Rev. B) 2001年 9月 14日

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

PSEMTHR24EVM-081 — 適用於 24 埠 IEEE 802.3bt 就緒 PSE 系統的主機板

PSEMTHR24EVM-081 是 TPS23881 和 TPS23882 PSE 控制器的基板。此電路板包含 24 組 2 對 / 4 對埠,可用於為 IEEE 802.3at 應用傳送高達 30W/埠的功率,以及為 IEEE 802.3bt 應用傳送高達 90W/埠的功率。

模擬型號

TLV431 Family TINA-TI AC Reference Design

SLVM090.TSC (80 KB) - TINA-TI Reference Design
模擬型號

TLV431 Family TINA-TI Transient Reference Design

SLVM089.TSC (45 KB) - TINA-TI Reference Design
模擬型號

TLV431 Family TINA-TI Transient and AC Spice Model

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

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

SLIM005A.ZIP (161 KB) - PSpice Model
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.

支援產品和硬體

支援產品和硬體

產品
分流電壓參考
TL1431 精密度可調整 (可編程) 分流參考 TL431 可調整精密度分流穩壓器 TL432 可調精密度分流穩壓器 (反向針腳配置) TLV431 1.5% 準確度、低電壓、可調整精密度分流穩壓器
軟體
計算工具
TL431CALC TL431 元件計算機
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 (...)
參考設計

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Design guide: PDF
電路圖: PDF
參考設計

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此參考設計是使用 LMG3422 及 F280039C 裝置的 3-kW、雙相、交錯式半橋電感器-電感器-電容器 (LLC)。此設計可達到 98.1% 峰值效率與 313 W/in³ 功率密度,可做為常用備援電源供應器 (CRP) 伺服器電源供應器的輸出階段,可用於評估兩個並聯 LLC 階段的控制方法,例如交叉與電流平衡。
Test report: PDF
參考設計

PMP20967 — 適用於瞬態測試的可調整的雙級定電流負載參考設計

這套可調式雙級定電流負載參考設計,可協助工程師利用特殊功能及簡易操作來測試電源供應器輸出負載瞬態回應。其電路板爲低電平和高電平提供負載瞬態調整,電壓轉換率可高達 100 A/µs。電路板上還設計了時序調整,如時間週期、延遲和脈衝寬度。
Test report: PDF
參考設計

TIDA-050045 — Type-3 IEEE802.3bt 就緒主動箝位順向轉換器 PoE 供電裝置參考設計

This TI reference design showcases a Type-3, Class 6, 51-W active clamp forward converter for powered devices (PD) through PoE. The TPS23730 PD controller provides detection and classification while also containing a PWM controller. This design takes in a 37-V to 57-V PoE input, and outputs a 5-V (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01456 — 適用於 200-480V AC 工業驅動器的精巧型非隔離式三相逆變器參考設計

This reference design realizes a 3 phase inverter subsystem for variable frequency AC inverter drives and servo drives. This design is particularly suited for drive architectures in which the microcontroller and inverter ground are non-isolated. The basic isolated gate driver UCC5320S is used for (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00202 — HIPERFACE 位置編碼器介面參考設計

The TIDA-00202 reference design implements an EMC compliant industrial hybrid analog and digital interface to a HIPERFACE position encoder. A 3.3V supply RS485 transceiver with IEC-ESD and IEC-EFT protection is used for the bidirectional parameter channel. For the analog sin/cos signal (...)
Design guide: PDF
電路圖: PDF
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
SOT-89 (PK) 3 Ultra Librarian
TO-92 (LP) 3 Ultra Librarian

訂購與品質

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  • 鉛塗層/球物料
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  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

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