The ATL431 and ATL432 are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and industrial temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5V) and 36V, with two external resistors. These devices have a typical output impedance of 0.05Ω. 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.
The ATL43x has > 20x improvement cathode current range over its TL43x predecessor. It also is stable with a wider range of load capacitance types and values.
ATL431 and ATL432 are the exact same parts but with different pinouts and order numbers. The ATL43x is offered in two grades, with initial tolerances (at 25°C) of 0.5%, 1%, for the B and A grade, respectively. In addition, low output drift vs temperature ensures consistent voltage regulation over the entire temperature range.
The ATL43xxI devices are characterized for operation from –40°C to +85°C, and the ATL43xxQ devices are characterized for operation from –40°C to +125°C.
| Documentación principal | Tipo | Título | Opciones de formato | Descargar la versión más reciente en inglés | Fecha |
|---|---|---|---|---|---|
| * | Hoja de datos | ATL43x 2.5V Low Iq Adjustable Precision Shunt Regulator datasheet (Rev. E) | PDF | HTML | 4/12/2024 | |
| Nota sobre la aplicación | Precision Current Sources and Sinks Using Voltage References (Rev. A) | PDF | HTML | 15/04/2026 | ||
| Libro electrónico | Tips and tricks for designing with voltage references (Rev. A) | 7/05/2021 | |||
| Nota sobre la aplicación | Using the TL431 for Undervoltage and Overvoltage Detection (Rev. A) | 11/12/2019 | |||
| Guía de selección | 431 Device Nomenclature (Rev. B) | 18/09/2019 | |||
| Libro electrónico | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28/06/2019 | |||
| Artículo técnico | Designing for isolated DC/DC converter shunt safety | PDF | HTML | 29/08/2015 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
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. (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| SOT-23 (DBZ) | 3 | Ultra Librarian |
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