Inicio Gestión de la energía Supervisor & reset ICs
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Gestión de la energía
Supervisor & reset ICs

TPS3820-Q1

ACTIVO

Supervisor automotriz de tensión, activo-bajo, con inserción y extracción (IC de reinicio), con vigi

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TPS3820-Q1

ACTIVO
Hoja de datos Haga su pedido ahora

Detalles del producto

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93, 4.55 Features Manual reset capable, Undervoltage monitor only, Watchdog timer Reset threshold accuracy (%) 2.4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 25 Supply voltage (min) (V) 1.1 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) 0.2 Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93, 4.55 Features Manual reset capable, Undervoltage monitor only, Watchdog timer Reset threshold accuracy (%) 2.4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 25 Supply voltage (min) (V) 1.1 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) 0.2 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Qualified for automotive applications
  • AEC-Q100 Qualified With the Following Results:
    • Device temperature grade 1: –40°C to 125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • ESD protection exceeds 2000 V Per MIL-STD-883, Method 3015; using human body model (C = 100 pF, R = 1500 Ω)
  • Power-on reset generator with fixed delay time of 200 ms (TPS3823/4/5/8-xx-Q1) or 25 ms (TPS3820-xx-Q1)
  • Manual reset input (TPS3820/3/5/8-xx-Q1)
  • Reset output available in active-low (TPS3820/3/4/5-xx-Q1), Active-High (TPS3824/5-xx-Q1), and open drain (TPS3828-xx-Q1)
  • Supply voltage supervision range:
    2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog timer (TPS3820/3/4/8-xx-Q1)
  • Supply current of 15 µA (Typical)
  • 5-Pin SOT-23 package
  • Temperature range: −40°C to 125°C
  • Qualified for automotive applications
  • AEC-Q100 Qualified With the Following Results:
    • Device temperature grade 1: –40°C to 125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • ESD protection exceeds 2000 V Per MIL-STD-883, Method 3015; using human body model (C = 100 pF, R = 1500 Ω)
  • Power-on reset generator with fixed delay time of 200 ms (TPS3823/4/5/8-xx-Q1) or 25 ms (TPS3820-xx-Q1)
  • Manual reset input (TPS3820/3/5/8-xx-Q1)
  • Reset output available in active-low (TPS3820/3/4/5-xx-Q1), Active-High (TPS3824/5-xx-Q1), and open drain (TPS3828-xx-Q1)
  • Supply voltage supervision range:
    2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog timer (TPS3820/3/4/8-xx-Q1)
  • Supply current of 15 µA (Typical)
  • 5-Pin SOT-23 package
  • Temperature range: −40°C to 125°C

For all new designs with TPS3820-xx-Q1, use the TPS3820-xxQPDBVRQ1 part number. The TPS3820-xxQP is functionally equivalent and a replacement to the TPS3820xxQ. The TPS3820-xxQDBVRQ1 is not recommended for new designs (NRND).

The TPS382x-xx-Q1 family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power on, RESET asserts when the supply voltage VDD becomes greater than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains below the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage VIT−. When the supply voltage drops below the threshold voltage VIT−, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT–, set by an internal voltage divider. The TPS382x-xx-Q1 family also offers watchdog time out options of 200 ms (TPS3820-xx-Q1) and 1.6 s (TPS3823/4/8-xx-Q1).

For all new designs with TPS3820-xx-Q1, use the TPS3820-xxQPDBVRQ1 part number. The TPS3820-xxQP is functionally equivalent and a replacement to the TPS3820xxQ. The TPS3820-xxQDBVRQ1 is not recommended for new designs (NRND).

The TPS382x-xx-Q1 family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power on, RESET asserts when the supply voltage VDD becomes greater than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains below the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage VIT−. When the supply voltage drops below the threshold voltage VIT−, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT–, set by an internal voltage divider. The TPS382x-xx-Q1 family also offers watchdog time out options of 200 ms (TPS3820-xx-Q1) and 1.6 s (TPS3823/4/8-xx-Q1).
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Nota especial

Para todos los diseños nuevos, utilice el TPS3820-33QPDBVRQ1 y el TPS3820-50QPDBVRQ1 en el botón Haga su pedido ahora. TPS3820-xxQP es equivalente al TPS3820xxQ en cuanto a la función y puede reemplazarlo.

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Documentación técnica

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* Data sheet TPS382x-xx-Q1 Voltage Monitor With Watchdog Timer datasheet (Rev. D) PDF | HTML 17 jul 2019
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17 mar 2020
Functional safety information TPS382x-Q1 Functional Safety FIT Rate and Failure Mode Distribution 19 dic 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 jun 2019
Application brief Latching a Voltage Supervisor (Reset IC) (Rev. A) 05 abr 2019
Application note Disabling the Watchdog Timer for TI's Family of Supervisors 30 oct 2003

Diseño y desarrollo

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.

Placa de evaluación

TPS382-Q1EVM — Módulo de evaluación para los supervisores de tensión TPS382x-Q1 con vigilancia integrada

The TPS382-Q1EVM evaluation module (EVM) has five different TPS382x-Q1 devices to let you evaluate and test the different features of the product family.  The EVM includes devices with 2.5-V, 3-V, 3.3-V and 5-V fixed monitoring, watchdog input, manual reset, (...)
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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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Pedidos y calidad

Información incluida:
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  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
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  • Lugar de ensamblaje

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