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TLV431

現行

1.5% 準確度、低電壓、可調整精密度分流穩壓器

立即訂購
產品規格表

TLV431

現行
產品規格表 立即訂購

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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技術文件

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類型 標題 日期
* Data sheet TLV431x Low-Voltage Adjustable Precision Shunt Regulator datasheet (Rev. Y) PDF | HTML 2024年 3月 16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 is the base board for the TPS23881 and TPS23882 PSE controllers. This board contains 24 2-Pair / 4-Pair ports that can that can be used to send up to 30W/port for IEEE 802.3at applications and up to 90W/port for IEEE 802.3bt applications.

檢視選項
模擬型號

TLV431 Family TINA-TI AC Reference Design

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

TLV431 Family TINA-TI Transient Reference Design

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

TLV431 Family TINA-TI Transient and AC Spice Model

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

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

SLIM005A.ZIP (161 KB) - PSpice Model
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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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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
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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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封裝 引腳 下載
SOT-23 (DBV) 5 檢視選項
SOT-23 (DBZ) 3 檢視選項
SOT-89 (PK) 3 檢視選項
TO-92 (LP) 3 檢視選項
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  • 資格摘要
  • 進行中可靠性監測
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