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ATL431LI

AKTIV

Programmierbarer Low-IQ-Shunt-Regler in einem ultrakleinen DQN-Gehäuse

Eine neuere Version dieses Produkts ist verfügbar

Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein
TL431 AKTIV Einstellbarer Präzisions-Shunt-Regler for cost optimized designs

Produktdetails

VO (V) 2.5 Initial accuracy (max) (%) 0.5, 1 VO adj (min) (V) 2.5 VO adj (max) (V) 36 Iz for regulation (min) (µA) 80 Reference voltage (V) adjustable Rating Catalog Temp coeff (max) (ppm/°C) 66 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
VO (V) 2.5 Initial accuracy (max) (%) 0.5, 1 VO adj (min) (V) 2.5 VO adj (max) (V) 36 Iz for regulation (min) (µA) 80 Reference voltage (V) adjustable Rating Catalog Temp coeff (max) (ppm/°C) 66 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37 X2SON (DQN) 4 1 mm² 1 x 1
  • Reference voltage tolerance at 25°C
    • 0.5% (B Grade)
    • 1% (A Grade)
  • Minimum typical output voltage: 2.5 V
  • Adjustable output voltage: Vref to 36 V
  • Operation from −40°C to +125°C (Q temp)
  • Maximum temperature drift
    • 17 mV (I Temp)
    • 27 mV (Q Temp)
  • 0.3-Ω Typical output impedance
  • Sink-current capability
    • Imin = 0.08 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)
  • Packages: 1-mm x 1-mm X2SON or SOT23-3
  • Reference voltage tolerance at 25°C
    • 0.5% (B Grade)
    • 1% (A Grade)
  • Minimum typical output voltage: 2.5 V
  • Adjustable output voltage: Vref to 36 V
  • Operation from −40°C to +125°C (Q temp)
  • Maximum temperature drift
    • 17 mV (I Temp)
    • 27 mV (Q Temp)
  • 0.3-Ω Typical output impedance
  • Sink-current capability
    • Imin = 0.08 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)
  • Packages: 1-mm x 1-mm X2SON or SOT23-3

The ATL43xLI 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 2.5 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 TL431LI and TL432LI, with lower minimum operating current to help reduce system power consumption. The ATL432LI device has exactly the same functionality and electrical specifications as the ATL431LI device, but has a different pinout for the DBZ package. The ATL431LI is also offered in a tiny X2SON (1.00 mm x 1.00 mm) package which makes it ideal for space constraint applications.

The ATL431LI 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 ATL43xLIxQ devices are characterized for operation from –40°C to +125°C.

The ATL43xLI 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 2.5 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 TL431LI and TL432LI, with lower minimum operating current to help reduce system power consumption. The ATL432LI device has exactly the same functionality and electrical specifications as the ATL431LI device, but has a different pinout for the DBZ package. The ATL431LI is also offered in a tiny X2SON (1.00 mm x 1.00 mm) package which makes it ideal for space constraint applications.

The ATL431LI 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 ATL43xLIxQ devices are characterized for operation from –40°C to +125°C.

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Technische Dokumentation

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Alle anzeigen 14
Typ Titel Datum
* Data sheet ATL431LI / ATL432LI High Bandwidth Low-Iq Programmable Shunt Regulator datasheet (Rev. D) PDF | HTML 21 Nov 2019
Application note Optimization of a Shunt Reference for Flyback Converters PDF | HTML 18 Okt 2023
Application note Designing Stable Isolated Power Supplies with Shunt Regulators PDF | HTML 29 Dez 2022
Application note Shunt Regulator Design Procedures for Secondary Feedback Loop PDF | HTML 02 Feb 2021
Analog Design Journal High-power, low-cost, discrete linear pre-regulator for automotive rear lights 21 Dez 2020
Application note Precision Current Sources and Sinks Using Voltage References 30 Jun 2020
Technical article How modern voltage references help shrink small designs PDF | HTML 01 Jun 2020
Application note Extending the Input Voltage Range of the LM5180‐Q1 PSR Flyback for VDA320(LV148) 30 Jan 2020
Application note Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) 11 Dez 2019
Selection guide 431 Device Nomenclature (Rev. B) 18 Sep 2019
EVM User's guide ATL431LIEVM User's Guide 30 Aug 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Technical article Gain ultra-high power density for 100-W USB Power Delivery adapters PDF | HTML 05 Mär 2019
Application note Designing with the ATL431LI 27 Nov 2018

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

ATL431EVM-001 — ATL431 einstellbarer Shunt-Regler – Evaluierungsmodul

The ATL431EVM-001 evaluation module (EVM) features the functionality and adjustability of the ATL431 by letting you program the cathode voltage with various resistor values. You can also set the cathode current using the various resistors in series with the supply. (...)

Benutzerhandbuch: PDF
Evaluierungsplatine

ATL431LIEVM — Evaluierungsmodul für programmierbaren Shunt-Regler mit ATL431LI High-Bandbreiten und niedrigem IQ f

The ATL431LI evaluation module (EVM) is an adjustable-voltage reference board that evaluates the ATL431LI device in the super-thin small-outline no-lead (X2SON) DQN small-form-factor package.

Benutzerhandbuch: PDF
Simulationsmodell

ATL431LI PSpice Transient Model

SLVMCW7.ZIP (56 KB) - PSpice Model
Simulationsmodell

ATL431LI Unencrypted PSpice Transient Model

SLVMCW6.ZIP (2 KB) - PSpice Model
Simulationsmodell

TL431LI and ATL431LI PSpice Average Model

SLVMCX5.ZIP (78 KB) - PSpice Model
Simulationsmodell

TL431LI and ATL431LI Unencrypted PSpice Average Model

SLVMCX4.ZIP (1 KB) - PSpice Model
Simulationstool

PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

PSpice® für TI ist eine Design- und Simulationsumgebung, welche Sie dabei unterstützt, die Funktionalität analoger Schaltungen zu evaluieren. Diese voll ausgestattete Design- und Simulationssuite verwendet eine analoge Analyse-Engine von Cadence®. PSpice für TI ist kostenlos erhältlich und (...)
Referenzdesigns

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This fully-tested reference design is a high-efficiency, high-power-density, AC/DC adapter solution with a wide input voltage range (100- to 240-V AC) for laptop adapters and smartphone charger applications. This design consists of a front-end transition-mode (TM) power factor correction (PFC) (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

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Dieses Referenzdesign bietet erstmals in der Branche eine Lösung für eine hybride Hysteresesteuerung (HHC). Es eignet sich für PSU-Anwendungen auf Servern mit 12 bis 54 V Ausgang. Das Referenzdesign demonstriert die Vorzüge der HHC-Regelung mit dem UCD3138 in einer LLC-Leistungsstufe für 400 V bis (...)
Test report: PDF
Referenzdesigns

PMP41081 — 1-kW, 12-V-HHC LLC-Referenzdesign mit C2000™ Echtzeit-Mikrocontroller

Dieses Referenzdesign ist eine 1-kW-, 400-V- bis 12-V-Halbbrücken-resonante DC/DC-Plattform zur Evaluierung der Lasttransientenleistung einer hybriden Hysteresesteuerung (HHC) mit einem F280039C-Mikrocontroller. HHC ist eine Methode, die eine direkte Frequenzregelung (DFC) und eine (...)
Test report: PDF
Referenzdesigns

PMP31193 — Referenzdesign für dreiphasigen Flyback mit Eingangstal-Schaltung mit zwei Ausgängen

Dieses Referenzdesign verwendet den Flyback-Controller UCC28742, um zwei Ausgänge, 23 V bei 1,0 A und 5,0 V bei 0,15 A, aus einem dreiphasigen Eingang zu erzeugen. UCC28742 verwendet einen optischen Koppler, um den Ausgang zu regeln und das Einschwingverhalten zu verbessern. Die (...)
Test report: PDF
Referenzdesigns

PMP22396 — Referenzdesign für bidirektionalen 2460-W-Aufwärtswandler für Automobilanwendungen

This reference design is a 2460-W bidirectional boost converter for automotive applications. The circuit is powered from the nominal 12-V battery to provide an output voltage of 48 V at 51.25 A. The design uses two dual-phase synchronous bidirectional controllers operating at a switching frequency (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

PMP30825 — Referenzdesign für Flyback mit Valley-Schaltung, 150 bis 430 V DC Eingangsspannung

This 10-W non-isolated flyback reference design uses the UCC28742 controller to generate four outputs (5 V at 150 mA, 12 V at 690 mA, 15 V at 80 mA, 18 V at 20 mA). The controller provides constant-voltage and constant-current regulation. Transistors are used in place of an optocoupler feedback (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

PMP22151 — Referenzdesign für 70-W-Flyback und 37-W-Aufwärtsleistung

This reference design uses two LM5155 devices to make a flyback and boost power stage. The flyback creates an isolated 28 Vdc bus from a 24 +/-10% Vdc bus and the boost creates a 37 Vdc bus from the output of the flyback. The flyback can be loaded up to 70 W and the boost can be loaded up to 37-W. (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

PMP30720 — Referenzdesign für isolierte Stromversorgung mit hohem Wirkungsgrad und extrem breitem Eingangsspann

This reference design uses the UCC28C42 boost controller and the UCC28780 active-clamp flyback controller to generate an isolated output of 24 V at 3.5 A over an ultra-wide input voltage range of 20 V to 375 V. The design also uses the UCC24612 synchronous rectifier controller on the secondary (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

PMP22021 — Kompaktes, isoliertes DC/DC-Flyback-Referenzdesign

This reference design uses LM5022-Q1 to make an isolated 3.3-V output capable of 1.1-A from a 9-V to 15-V input. All components are placed on one side of the board to reduce assembly complexity and cost. A secondary filter reduces the output ripple to under 30-mV peak-to-peak. The design can (...)
Test report: PDF
Schaltplan: PDF
Gehäuse Pins Herunterladen
SOT-23 (DBZ) 3 Optionen anzeigen
X2SON (DQN) 4 Optionen anzeigen

Bestellen & Qualität

Beinhaltete Information:
  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

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