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TL432LI

AKTIV

Einstellbarer Präzisions-Shunt-Regler mit optimiertem Referenzstrom (Pin-Layout: RKA)

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TLA432 AKTIV Vollständig kondensatorstabile, präzise programmierbare Referenz mit RKA-Pin-Layout Improved to all load cap stability, improved temperature drift, decreased minimum cathode current

TL432LI

AKTIV
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Produktdetails

Rating Catalog VO (V) 2.495 Initial accuracy (max) (%) 0.5, 1 Iz for regulation (min) (µA) 400 VO adj (min) (V) 2.495 VO adj (max) (V) 36 Reference voltage (V) adjustable Temp coeff (max) (ppm/°C) 63 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
Rating Catalog VO (V) 2.495 Initial accuracy (max) (%) 0.5, 1 Iz for regulation (min) (µA) 400 VO adj (min) (V) 2.495 VO adj (max) (V) 36 Reference voltage (V) adjustable 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 mm × 2.37 mm)
  • 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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TL431LI / TL432LI Programmable Shunt Regulator with Optimized Reference Current datasheet (Rev. A) PDF | HTML 12.11.2018
Anwendungshinweis Precision Current Sources and Sinks Using Voltage References (Rev. A) PDF | HTML 15.04.2026
Anwendungshinweis Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 09.01.2024
Anwendungshinweis Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) 11.12.2019
Auswahlhilfe 431 Device Nomenclature (Rev. B) 18.09.2019
Anwendungshinweis Designing With the Improved TL431LI (Rev. A) 28.06.2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28.06.2019

Design und Entwicklung

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Simulationsmodell

TL431LI PSpice Transient Model

SLVMCW2.ZIP (56 KB) - PSpice-Modell
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Simulationsmodell

TL431LI Unencrypted PSpice Transient Model

SLVMCW1.ZIP (2 KB) - PSpice-Modell
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Berechnungstool

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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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
SOT-23 (DBZ) 3 Ultra Librarian
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