Inicio Gestión de la energía Supervisor & reset ICs

TPS3897

ACTIVO

Supervisor monocanal, ultrapequeño y ajustable con salida activa-alta y drenaje abierto

Detalles del producto

Number of supplies monitored 1, 2 Threshold voltage 1 (typ) (V) 0.5 Features Manual reset capable, Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.006 Output driver type/reset output Active-high, Open-drain Time delay (ms) 0.04 Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1, 2 Threshold voltage 1 (typ) (V) 0.5 Features Manual reset capable, Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.006 Output driver type/reset output Active-high, Open-drain Time delay (ms) 0.04 Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
USON (DRY) 6 1.45 mm² 1.45 x 1
  • Very Small USON (1.45 mm × 1.00 mm) Package
  • Adjustable Threshold Down to 500 mV
  • Threshold Accuracy: 1% Over Temperature
  • Capacitor-Adjustable Delay Time
  • Low Quiescent Current: 6 µA (Typical)
  • External Enable Input
  • Open-Drain (Rated at 18 V) and Push-Pull Output
    Options
  • Temperature Range: –40°C to 125°C
  • Pin-for-Pin Compatible With MAX6895/6/7/8
  • Very Small USON (1.45 mm × 1.00 mm) Package
  • Adjustable Threshold Down to 500 mV
  • Threshold Accuracy: 1% Over Temperature
  • Capacitor-Adjustable Delay Time
  • Low Quiescent Current: 6 µA (Typical)
  • External Enable Input
  • Open-Drain (Rated at 18 V) and Push-Pull Output
    Options
  • Temperature Range: –40°C to 125°C
  • Pin-for-Pin Compatible With MAX6895/6/7/8

The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.

For TPS389xA versions, both SENSE and ENABLE have a capacitor-adjustable delay. The output asserts after this capacitor-adjustable delay when both SENSE and ENABLE inputs are good. The TPS389xP devices have a small, 0.2-µs propagation delay from when the enable pin asserts to when the output pin asserts, provided SENSE is above the threshold.

All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.

The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.

For TPS389xA versions, both SENSE and ENABLE have a capacitor-adjustable delay. The output asserts after this capacitor-adjustable delay when both SENSE and ENABLE inputs are good. The TPS389xP devices have a small, 0.2-µs propagation delay from when the enable pin asserts to when the output pin asserts, provided SENSE is above the threshold.

All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.

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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS389x Single-Channel, Adjustable Voltage Monitor in Ultra-Small Package datasheet (Rev. B) PDF | HTML 02 sep 2014
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17 mar 2020
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 28 feb 2020
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
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 sep 2011

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.

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Modelo de simulación

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SBVM073A.ZIP (33 KB) - PSpice Model
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Modelo de simulación

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Herramienta de cálculo

SBVC043 TPS389x Reset Time Delay Calculator

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
USON (DRY) 6 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • 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
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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