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Supervisor & reset ICs
Circuitos integrados de restablecimiento y vigilancia

TPS3803-Q1

ACTIVO

Detectores automotrices de tensión monocanal

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TPS3803-Q1

ACTIVO
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Detalles del producto

Rating Automotive Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.226, 1.4 Features Ease-of-use Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.003 Output driver type/reset output Active-low, Open-drain Time delay (ms) 0 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Rating Automotive Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.226, 1.4 Features Ease-of-use Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.003 Output driver type/reset output Active-low, Open-drain Time delay (ms) 0 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
SOT-SC70 (DCK) 5 4.2 mm² (2 mm × 2.1 mm)
  • Qualified for Automotive Applications
  • Single Voltage Detector (TPS3803): Adjustable
    and 1.5 V
  • Dual Voltage Detector (TPS3805): Adjustable and
    3.3 V
  • High ±1.5% Threshold Voltage Accuracy
  • Supply Current: 3 µA Typical at VDD = 3.3 V
  • Push/Pull Reset Output (TPS3805),
    Open-Drain Reset Output (TPS3803)
  • Temperature Range: –40°C to 125°C
  • 5-Pin SC-70 Package
  • Qualified for Automotive Applications
  • Single Voltage Detector (TPS3803): Adjustable
    and 1.5 V
  • Dual Voltage Detector (TPS3805): Adjustable and
    3.3 V
  • High ±1.5% Threshold Voltage Accuracy
  • Supply Current: 3 µA Typical at VDD = 3.3 V
  • Push/Pull Reset Output (TPS3805),
    Open-Drain Reset Output (TPS3803)
  • Temperature Range: –40°C to 125°C
  • 5-Pin SC-70 Package

The TPS3803-Q1 and TPS3805-Q1 families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSPs and processor-based systems.

The TPS3803G15-Q1 device has a fixed-sense threshold voltage VIT set by an internal voltage divider, whereas the TPS3803-01-Q1 has an adjustable SENSE input that can be configured by two external resistors. In addition to the fixed sense threshold monitored at VDD, the TPS3805-Q1 devices provide a second adjustable SENSE input. RESET is asserted in case either of the two voltages drops below VIT.

During power on, RESET is asserted when supply voltage VDD becomes higher than 0.8 V. Thereafter, the supervisory circuit monitors VDD (and/or SENSE) and keeps RESET active as long as VDD or SENSE remains below the threshold voltage VIT. As soon as VDD (SENSE) rises above the threshold voltage VIT, RESET is deasserted again. The product spectrum is designed for 1.5-V, 3.3-V, and adjustable supply voltages.

The devices are available in a 5-pin SC-70 package. The TPS3803-Q1 and TPS3805-Q1 devices are characterized for operation over a temperature range of –40°C to 125°C.

The TPS3803-Q1 and TPS3805-Q1 families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSPs and processor-based systems.

The TPS3803G15-Q1 device has a fixed-sense threshold voltage VIT set by an internal voltage divider, whereas the TPS3803-01-Q1 has an adjustable SENSE input that can be configured by two external resistors. In addition to the fixed sense threshold monitored at VDD, the TPS3805-Q1 devices provide a second adjustable SENSE input. RESET is asserted in case either of the two voltages drops below VIT.

During power on, RESET is asserted when supply voltage VDD becomes higher than 0.8 V. Thereafter, the supervisory circuit monitors VDD (and/or SENSE) and keeps RESET active as long as VDD or SENSE remains below the threshold voltage VIT. As soon as VDD (SENSE) rises above the threshold voltage VIT, RESET is deasserted again. The product spectrum is designed for 1.5-V, 3.3-V, and adjustable supply voltages.

The devices are available in a 5-pin SC-70 package. The TPS3803-Q1 and TPS3805-Q1 devices are characterized for operation over a temperature range of –40°C to 125°C.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS380x-Q1 Voltage Detectors datasheet (Rev. C) PDF | HTML 24/07/2015
Libro electrónico Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28/06/2019
Informe de prueba PMP1941 TEST RESULTS 6/01/2011

Diseño y desarrollo

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Placa de evaluación

TPS3803Q1EVM — Módulo de evaluación para detectores de tensión TPS3803x-Q1

El módulo de evaluación (EVM) TPS3803Q1EVM incluye la familia de circuitos de supervisión TPS3803-Q1 y TPS3805-Q1. Estos IC de supervisión proporcionan supervisión de temporización e inicialización de circuitos, principalmente para sistemas basados en DSP y procesadores. El EVM cuenta con dos (...)
Guía del usuario: PDF
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-SC70 (DCK) 5 Ultra Librarian
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