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Supervisor & reset ICs
Circuitos integrados de restablecimiento y vigilancia

TLV840

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Supervisor de baja tensión, con retardo de reinicio ajustable y reinicio manual

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TLV840

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Detalles del producto

Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.8, 1, 1.1, 1.3, 1.4, 2, 2.8, 2.9, 3, 3.3, 3.5, 4, 4.6, 5, 5.2 Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0001 Output driver type/reset output Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.04 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.8, 1, 1.1, 1.3, 1.4, 2, 2.8, 2.9, 3, 3.3, 3.5, 4, 4.6, 5, 5.2 Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0001 Output driver type/reset output Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.04 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • Operating voltage range : 0.7 V to 6 V
  • Nano supply current : 120 nA (Typical)
  • Fixed threshold voltage (VIT-): 0.8 V to 5.4 V
    • Threshold voltages available in 100mV steps
    • High accuracy: ±0.5% (Typical)
    • Built-in hysteresis (VHYS): 5% (Typical)
  • Reset time delay (tD): capacitor-based programmable (TLV840C, TLV840M)
    • Minimum time delay: 40 µs (typical) without capacitor
  • Active-low manual reset (MR) (TLV840M)
  • Four output topologies:
    • TLV840xxDL: open-drain, active-low (RESET)
    • TLV840xxPL: push-pull, active-low (RESET)
    • TLV840xxDH: open-drain, active-high (RESET)
    • TLV840xxPH: push-pull, active-high (RESET)
  • Wide temperature range: –40°C to +125°C
  • Package: SOT23-5 (DBV)
  • Operating voltage range : 0.7 V to 6 V
  • Nano supply current : 120 nA (Typical)
  • Fixed threshold voltage (VIT-): 0.8 V to 5.4 V
    • Threshold voltages available in 100mV steps
    • High accuracy: ±0.5% (Typical)
    • Built-in hysteresis (VHYS): 5% (Typical)
  • Reset time delay (tD): capacitor-based programmable (TLV840C, TLV840M)
    • Minimum time delay: 40 µs (typical) without capacitor
  • Active-low manual reset (MR) (TLV840M)
  • Four output topologies:
    • TLV840xxDL: open-drain, active-low (RESET)
    • TLV840xxPL: push-pull, active-low (RESET)
    • TLV840xxDH: open-drain, active-high (RESET)
    • TLV840xxPH: push-pull, active-high (RESET)
  • Wide temperature range: –40°C to +125°C
  • Package: SOT23-5 (DBV)

The TLV840 family of voltage supervisors or reset ICs can operate at high voltage levels while maintaining very low quiescent current across the whole VDD and temperature range. TLV840 offers best combination of low power consumption, high accuracy and low propagation delay (tp_HL= 30 µs typical).

Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (VIT-). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VHYS) and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between the CT pin and ground for TLV840C and TLV840M. For a minimum reset delay time the CT pin can be left floating. TLV840N does not offer a programmable delay and offers fixed reset delay timing options: 40 µs, 2 ms, 10 ms, 30 ms, 50 ms, 80 ms, 100 ms, 150 ms, 200 ms.

Additional features: Low power-on reset voltage (VPOR), built-in glitch immunity protection for VDD, built-in hysteresis, low open-drain output leakage current (Ilkg(OD)). TLV840 is a perfect voltage monitoring solution for industrial applications and battery-powered / low-power applications.

The TLV840 family of voltage supervisors or reset ICs can operate at high voltage levels while maintaining very low quiescent current across the whole VDD and temperature range. TLV840 offers best combination of low power consumption, high accuracy and low propagation delay (tp_HL= 30 µs typical).

Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (VIT-). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VHYS) and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between the CT pin and ground for TLV840C and TLV840M. For a minimum reset delay time the CT pin can be left floating. TLV840N does not offer a programmable delay and offers fixed reset delay timing options: 40 µs, 2 ms, 10 ms, 30 ms, 50 ms, 80 ms, 100 ms, 150 ms, 200 ms.

Additional features: Low power-on reset voltage (VPOR), built-in glitch immunity protection for VDD, built-in hysteresis, low open-drain output leakage current (Ilkg(OD)). TLV840 is a perfect voltage monitoring solution for industrial applications and battery-powered / low-power applications.
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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 TLV840 Low Voltage Supervisor with Adjustable Reset Time Delay and Manual Reset datasheet (Rev. C) 13/08/2020
Artículo técnico Three reasons to add a voltage supervisor to your next wearable power design PDF | HTML 17/06/2021
Nota sobre la aplicación Back-up Power Supply Switchover with Supply Voltage Supervisor & Power & Power M 9/04/2020
Nota sobre la aplicación Programmable Push-Button, Pulse Detector, and Pulse Generator Solutions 10/03/2020
Guía de selección Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 28/02/2020
Libro electrónico Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28/06/2019

Diseño y desarrollo

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Placa de evaluación

TLV840EVM — Módulo de evaluación TLV840 para supervisor de baja tensión, con retardo de tiempo de reinicio ajust

El módulo de evaluación TLV840 (EVM) está diseñado para evaluar el rendimiento del producto TLV840, que es un supervisor de tensión de 5 pines y un CI de reinicio. El TLV840 ofrece un funcionamiento de hasta 6 V, al tiempo que mantiene una baja corriente inactiva de 1.2 µA (máx.), además de una (...)

Guía del usuario: PDF
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Modelo de simulación

TLV840 PSpice Model

SNVMC19.ZIP (56 KB) - Modelo PSpice
Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23 (DBV) 5 Ultra Librarian
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